Showing papers on "Stark effect published in 1985"
TL;DR: Detailed calculations of the shift of exciton peaks are presented including (i) exact solutions for single particles in infinite wells, (ii) tunneling resonance calculations for finite wells, and (iii) variational calculations ofexciton binding energy in a field.
Abstract: We report experiments and theory on the effects of electric fields on the optical absorption near the band edge in GaAs/AlGaAs quantum-well structures. We find distinct physical effects for fields parallel and perpendicular to the quantum-well layers. In both cases, we observe large changes in the absorption near the exciton peaks. In the parallel-field case, the excitons broaden with field, disappearing at fields \ensuremath{\sim}${10}^{4}$ V/cm; this behavior is in qualitative agreement with previous theory and in order-of-magnitude agreement with direct theoretical calculations of field ionization rates reported in this paper. This behavior is also qualitatively similar to that seen with three-dimensional semiconductors. For the perpendicular-field case, we see shifts of the exciton peaks to lower energies by up to 2.5 times the zero-field binding energy with the excitons remaining resolved at up to \ensuremath{\sim}${10}^{5}$ V/cm: This behavior is qualitatively different from that of bulk semiconductors and is explained through a mechanism previously briefly described by us [D. A. B. Miller et al., Phys. Rev. Lett. 53, 2173 (1984)] called the quantum-confined Stark effect. In this mechanism the quantum confinement of carriers inhibits the exciton field ionization. To support this mechanism we present detailed calculations of the shift of exciton peaks including (i) exact solutions for single particles in infinite wells, (ii) tunneling resonance calculations for finite wells, and (iii) variational calculations of exciton binding energy in a field. We also calculate the tunneling lifetimes of particles in the wells to check the inhibition of field ionization. The calculations are performed using both the 85:15 split of band-gap discontinuity between conduction and valence bands and the recently proposed 57:43 split. Although the detailed calculations differ in the two cases, the overall shift of the exciton peaks is not very sensitive to split ratio. We find excellent agreement with experiment with no fitted parameters.
1,731 citations
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TL;DR: With one Rydberg atom the linewidth of the maser transition at about 21 GHz was power broadened and at higher densities asymmetry of the transition was observed, which is ascribed to an ac Stark effect.
Abstract: The exchange of photons between single Rydberg atoms and a single mode of a superconducting cavity with a quality factor $Q=8\ifmmode\times\else\texttimes\fi{}{10}^{8}$ at 2 K was observed. Signals could still be detected with an average number of only 0.06 atom simultaneously in the cavity. With one Rydberg atom the linewidth of the maser transition at about 21 GHz was power broadened and at higher densities asymmetry of the transition was observed, which is ascribed to an ac Stark effect.
879 citations
IBM1
TL;DR: In this article, a simple theoretical model provides a quantitative connection between the tunneling data and both previous and new inverse-photo-emission data, which is used to study image-type surface states.
Abstract: Tunneling spectroscopy performed with the scanning tunneling microscope is used to study image-type surface states. The tunneling tip causes a Stark shift and expansion of the hydrogenic image-state spectrum, permitting a clear resolution of the individual states. A simple theoretical model provides a quantitative connection between the tunneling data and both previous and new inverse-photoemission data.
290 citations
TL;DR: In this article, the quantum-confined Stark effect on the photoluminescence of the lowest free exciton for electric fields perpendicular to the quantum well layers is investigated.
Abstract: We report on picosecond luminescence studies of GaAs/AlGaAs quantum wells in the regime of the quantum-confined Stark effect. A drastic increase of the recombination lifetime is accompanied by a Stark shift of the photoluminescence of the lowest free exciton for electric fields perpendicular to the quantum-well layers. A consistent picture of the quantum-confined Stark effect is presented.
170 citations
TL;DR: This Letter presents for the first time the observation of the resonant optical Stark effect in a semiconductor.
Abstract: This Letter presents for the first time the observation of the resonant optical Stark effect in a semiconductor. The excitonic system of ${\mathrm{Cu}}_{2}$O is well suited to the investigation of this effect because of its rather large binding energy and well-resolved resonances at low temperatures. The mixing between the $1S$ and $2P$ excitons by the electric field of a tunable high-power C${\mathrm{O}}_{2}$ laser leads to drastic changes in the one-photon spectrum around the $2P$ absorption line. Even details of the line shape are consistently described in terms of the frequency-dependent nonlinear susceptibility.
137 citations
TL;DR: Physical insights are yielded regarding the general features and mechanisms of the frequency- and intensity-dependent continuum-continuum transitions and ''peak switching'' phenomena in the above-threshold ionization processes.
Abstract: Accurate ab initio nonperturbative L/sup 2/ non-Hermitian Floquet calculations for intensity-dependent threshold shifts and ground-state total ionization widths (rates) for one-, two-, and three-photon-dominant intense-field ionization of atomic hydrogen are presented. The results show the importance of both the ac Stark shift and the pondermotive potential in the determination of the net threshold shift. In addition, branching ratios to individual continua have been estimated, yielding physical insights regarding the general features and mechanisms of the frequency- and intensity-dependent continuum-continuum transitions and ''peak switching'' phenomena in the above-threshold ionization processes.
128 citations
TL;DR: In this paper, the first measurements of perpendicular field electroabsorption (quantum confined Stark effect) in GaAs/AlGaAs quantum wells for light propagating parallel to the plane of the layers were reported.
Abstract: We report the first measurements of perpendicular field electroabsorption (quantum confined Stark effect) in GaAs/AlGaAs quantum wells for light propagating parallel to the plane of the layers. This geometry is well suited for integrated optics. The absorption edge shifts to longer wavelengths with increasing field by as much as 40 meV, giving a modulation depth>10 dB. The strong dichroism present in this geometry is retained even at high fields, making polarization‐sensitive electro‐optical devices possible. We also demonstrate in the waveguide geometry optical bistability due to the self‐electro‐optic effect with 20:1 on/off ratio.
122 citations
TL;DR: In this paper, a van der Waals molecule, ArHCl, was used to populate an excited vibrational state in the van derWaals molecule in a molecular beam using far infrared-radio frequency two photon experiments.
Abstract: Far infrared laser–Stark spectroscopy is used to populate an excited vibrational state in the van der Waals molecule, ArHCl, in a molecular beam. Microwave–far infrared double resonance allows the identification of this state as the first excited bending state of Π symmetry. Subsequent radio frequency electric resonance of the vibrationally excited molecule combined with far infrared–radio frequency two photon experiments gives the following spectroscopic constants: ν0−B’=33.9248(7) (cm−1), B’=1695.(20) (MHz), μ=0.265(3) (D), eqQaa=12.(7) (MHz), eqQbb−eqQcc=−73.927(23) (MHz), q1=−49.583(2) (MHz). These constants are compared with theoretical predictions obtained using previously suggested potential energy surfaces and are related to the presence of other nearby vibrational states.
111 citations
TL;DR: In this article, the NH3 monomer symmetry axis was found to have a vibrationally averaged displacement of 23.1° from the N...O axis, and no evidence for transfer of a proton from water to the ammonia was observed.
Abstract: Microwave and radio frequency spectra for NH3⋅H2O and deuterated analogs have been observed by molecular beam electric resonance spectroscopy. Rotational constant, Stark effect, and nitrogen quadrupole coupling interaction data were obtained. This complex is found to have a linear, hydrogen bonded structure with water as the proton donor. The NH3 monomer symmetry axis was found to have a vibrationally averaged displacement of 23.1° from the N...O axis. No evidence for transfer of a proton from water to the ammonia was observed.
98 citations
TL;DR: Hydrogen atoms electrically polarized along the direction of a strong linearly polarized microwave electric field respond one-dimensionally to this field by maintaining their polarization.
Abstract: We have observed microwave transitions of overall order up to 16 in hydrogen atoms initially in $n=60$ lowest-energy Stark states. Increases in $n$ as large as 4 occur with little change in the electric quantum number ${n}_{e}$. Thus hydrogen atoms electrically polarized along the direction of a strong linearly polarized microwave electric field respond one-dimensionally to this field by maintaining their polarization. At some microwave frequencies the final-state $n$ distribution is smooth above threshold field values estimated for stochastic transitions.
81 citations
TL;DR: In this article, a molecular beam electric resonance spectroscopy (MBEES) was used for the analysis ofyanoacetylene with three singly excited bending modes and Stark data were taken for the lower energy of two of these three states.
Abstract: Cyanoacetylene was studied using molecular beam electric resonance spectroscopy. Ground state results are μ=3.731 72 D, eQq=−4319.24 kHz, CN=0.976 kHz. Zero field spectra were observed for the three singly excited bending modes and Stark data were taken for the lower energy of two of these three states. Excited state results include ν7; μ=3.7225 D, eQqaa=−4302.0 kHz, eQ(qbb−qcc)=−28.8 kHz, CN(J=2)=1.47 kHz; ν6; μ=3.7263 D, eQqaa=−4369.7 kHz, eQ(qbb−qcc)=177.1 kHz, CB(J=2)=1.30 kHz; ν5; eQqaa=−4325.7, eQ(qbb−qcc)=96.8 kHz, CN(J=2)=1.33 kHz. l‐doubling constants were also obtained for the degenerate vibrations.
TL;DR: In this paper, the relative positions of the base and collector are interchanged from conventional emitter-base-collector sequence to obtain negligible base currents and large current transfer ratios.
Abstract: Two novel three‐terminal devices based on tunneling in quantum well and quantum barrier heterostructures are proposed and analyzed theoretically. In both devices, the relative positions of the base and collector are interchanged from conventional emitter‐base‐collector sequence. This provides a means for obtaining negligible base currents and large current transfer ratios. In both cases, a base voltage controls the emitter‐collector tunneling current by shifting the resonances in a quantum well. Calculations indicate that significant variations in the emitter‐collector current‐voltage characteristics can be obtained for reasonable base‐emitter voltages. We call the two devices a Stark effect transistor and a negative resistance Stark effect transistor, respectively.
TL;DR: In this article, a low-intensity probe beam of frequency ω−δω inside a (GaAl)As semiconductor laser operating above threshold at the pump frequency was demonstrated.
Abstract: Intracavity nearly degenerate four‐wave mixing has been demonstrated by injecting a low intensity probe beam of frequency ω−δω inside a (GaAl)As semiconductor laser operating above threshold at the pump frequency ω. Conjugated reflectivities as high as 5000 together with a 25% energy conversion efficiency are reported with only a few milliwatt pump power. Additional peaks related to the ac stark effect have been observed at a detuning which depended on the pump power. This process could be useful for the study of instabilities occurring in lasers as well as for optical amplification in laser diodes.
TL;DR: The increase in the data storage capacity for optical memory devices offered by the electrical field parameter is discussed and the change in optical density is illustrated for single and multiple hole burning.
Abstract: This paper investigates the effects of an external electric field on hole-burning processes. The photoprocess for hole burning involves the transformation of chlorin (dihydroporphyrin) into its phototautomer. Two-dimensional representations (voltage/frequency) of the transmittance and the change in optical density are illustrated for single and multiple hole burning. At 4.2 K a hole width of 25 kV/cm in electric field scanning range and of 3 GHz (0.1 cm−1) in optical frequency was achieved. The increase in the data storage capacity for optical memory devices offered by the electrical field parameter is discussed.
TL;DR: In this paper, a sputter source/supersonic jet apparatus was developed in order to record MJ-resolved Stark spectra of refractory diatomic molecules, and Dipole moments of 0.3±0.1 and 2.4± 0.1 D were measured for the NiH B 2Δ5/2(v=1) and X 2Δ 5/2 (v=0) levels from resolved splittings of the R(2.5) lines at 17.95 and 17.50 cm−1
Abstract: A sputter source/supersonic jet apparatus has been developed in order to record MJ‐resolved Stark spectra of refractory diatomic molecules. Dipole moments of 0.3±0.1 and 2.4±0.1 D have been measured for the NiH B 2Δ5/2(v=1) and X 2Δ5/2(v=0) levels from resolved splittings of the Q(2.5) and R(2.5) lines at 17 462.95 and 17 500.50 cm−1.
TL;DR: In this article, the ground-state dipole moment of SrF was measured by the molecular-beam laser-microwave double-resonance method and the coefficients in the vibrational expansion μ = μe + μI(ν + 1/2) were determined as νe = 3.4676(10) D and μI = 0.0575(10), with the statistical standard deviation given in parentheses.
TL;DR: In this article, the authors deal with recent advances in search for possible types of regularities and systematic trends in the Stark broadening and shift parameters and demonstrate the existence of several other types of common regularities in the spectral lines originating from the same type of transition of neutral atoms and singly charged ions of the elements along the periodic system.
Abstract: This paper deals with recent advances in search for possible types of regularities and systematic trends in the Stark broadening and shift parameters. The emphasis is (i) on the Stark parameters' dependence on the ionization potential from the upper level of a corresponding transition (which, after being established, is used for the theoretical prediction of these parameters for the spectral lines where not available) and (ii) on the experimental determination of the Stark line broadening and shift parameters of group-IV and -V homologous singly charged ions. The data set obtained in such a way, together with existing experimental and theoretical data, are used to demonstrate the existence of several other types of common regularities in the Stark widths and shifts of the lines originating from the same type of transition of neutral atoms and singly charged ions of the elements along the periodic system.
TL;DR: In this article, an exact numerical calculation for an isolated GaAs quantum well system subjected to an external electric field was performed to predict both the shifts and widths of the Stark resonances.
Abstract: We have performed an exact numerical calculation for an isolated GaAs quantum well system subjected to an external electric field. This calculation predicts both the shifts and widths of the Stark resonances. The shift predictions are in agreement with recent experimental results and the width calculations allow the observed decrease in luminescence lifetime with field to be interpreted in terms of the field‐induced tunneling of the carriers.
TL;DR: In this article, the authors used a CAS SCF wavefunction and extended basis set to show a change in the vibrational frequency with electric field strength for the ground 1sigma(+) state of CO of one third that observed for CO/Ni(110).
TL;DR: The rotational spectra of the anti conformer of vinyl alcohol (ethenol, H2CCHOH) and its OD modification have been studied by microwave spectroscopy.
TL;DR: In this paper, the authors report on instabilities of a single-mode laser operating under homogeneous broadening conditions and show that Bichromatic emission as predicted from the Lorenz model as well as the correspondingly high second thresholds are found.
Abstract: We report on instabilities of a single-mode laser operating under homogeneous broadening conditions. Bichromatic emission as recently predicted from the Lorenz model as well as the correspondingly high second thresholds are found.
TL;DR: A mathematical treatment is presented in order to obtain the autocorrelation function necessary in hydrogen Stark profiles calculations, which reduces the size of the differential-equation systems appearing in those ones, according to the SO(4) symmetry group for hydrogen.
Abstract: A mathematical treatment is presented in order to obtain the autocorrelation function necessary in hydrogen Stark profiles calculations. The method reduces the size of the differential-equation systems appearing in those ones, according to the SO(4) symmetry group for hydrogen. This technique suits for computer-simulated calculations.
TL;DR: In this article, the parity or Λ doublet levels of the A 1 Π state of BCl radicals formed by CO2 laser multiphoton dissociation of Bcl3 molecules were measured in the presence of a strong electric field.
Abstract: We describe time‐resolved and spectrally resolved laser‐induced fluorescence measurements from the parity or Λ doublet levels of the A 1Π state of BCl radicals formed by CO2 laser multiphoton dissociation of BCl3 molecules. We show how the effects of collisional mixing can be discerned from the effects of electric field mixing. A set of rate equations for population transfer which include the effects of both field and collisional mixing under conditions of incoherent excitation are derived and compared to the more general theory of Alexander. Zero‐field measurements of collisional mixing rates yield parity‐changing rate constants kef whose rotational quantum number J dependence is consistent with a dipole–induced‐dipole collision model: kef=3.4, 2.6, 1.9, and 1.4×106 s−1 Torr−1 for J=3, 5, 11, and 18, respectively. Measurement of time‐resolved fluorescence from Stark mixed parity levels in the presence of a strong electric field indicates that the levels are prepared coherently. Time integrated measuremen...
TL;DR: The first observation of electric-field-induced resonances in the multistep photoionization of hydrogen is reported and the dependence of the spacing of the resonances on the electric field strength is measured.
Abstract: We report the first observation of electric-field-induced resonances in the multistep photoionization of hydrogen. Asymmetric profiles having blue wings are observed near the photoionization limit resulting from tunneling across the Stark-Coulomb combined potential (shape resonance). We measured the dependence of the spacing of the resonances on the electric field strength.
Book•
01 Jan 1985
TL;DR: Theoretical Aspects of High-Resolution Molecular Spectra of Transient Molecules are discussed in this paper, where the authors present a history of free radical studies by high-resolution spectroscopy.
Abstract: 1. Introduction.- 1.1 Historical Background of Free Radical Studies by High-Resolution Spectroscopy.- 1.2 Significance of High-Resolution Spectra of Transient Molecules.- 2. Theoretical Aspects of High-Resolution Molecular Spectra.- 2.1 Molecular Rotation.- 2.1.1 Angular Momentum.- 2.1.2 Rotational Energy of a Rigid Body.- 2.2 Vibration-Rotation Interaction.- 2.3 Fine and Hyperfine Structures.- 2.3.1 Electron Spin and Electron Orbital Angular Momenta.- 2.3.2 Fine-Structure Hamiltonian.- 2.3.3 Hamiltonian Matrix Elements Appropriate for Hund's Case (a).- 2.3.4 ?-Type Doubling in 2? States.- 2.3.5 Hamiltonian Matrix Elements Appropriate for Hund's Case (b).- 2.3.6 Rotational Structure of a 2E Molecule.- 2.3.7 Hyperfine Interaction.- 2.3.8 Matrix Elements of the Hyperfine Interaction Appropriate for Case (a)?.- 2.3.9 Matrix Elements of the Hyperfine Interaction Appropriate for Case (b)?J.- 2.3.10 Hyperfine Interactions Caused by More than One Nucleus.- 2.3.11 Hyperfine Interactions in a C3v Symmetric Top Molecule.- 2.4 Vibronic Interaction Including the Renner-Teller Effect.- 2.4.1 Born-Oppenheimer Approximation and Vibronic Interaction.- 2.4.2 Renner Effect on a Linear Polyatomic Molecule in a ? Electronic State.- 2.4.3 Rotational Energy Levels of a Linear Triatomic Molecule Affected by Vibronic Interactions.- 2.4.4 Hyperfine Structure in a 2? Polyatomic Molecule Affected by Rovibronic Interactions.- 2.5 Zeeman and Stark Effects.- 2.5.1 Zeeman Effect of a Molecule Without Orbital Angular Momentum.- 2.5.2 Zeeman Effect of a Molecule with Electron Orbital Angular Momentum.- 2.5.3 Stark Effect.- 3. Experimental Details.- 3.1 Microwave Spectrometer.- 3.1.1 Requirements to be Met by a Microwave Spectrometer for the Study of Transient Molecules.- 3.1.2 Historical Survey of Microwave Studies of Transient Molecules.- 3.1.3 High Sensitivity Millimeter-Wave Spectrometer to Study Transient Molecules.- 3.2 Infrared Laser Spectrometers.- 3.2.1 Diode Laser Spectrometer.- 3.2.2 Infrared Laser Magnetic Resonance Spectrometer.- 3.2.3 Far-Infrared Laser Magnetic Resonance Spectrometer.- 3.2.4 Difference Frequency Laser Spectrometer.- 3.3 Dye Laser Spectroscopic System.- 3.3.1 CW Dye Laser.- 3.3.2 Doppler-Limited Excitation Spectroscopy Using a CW Dye Laser as a Source.- 3.3.3 Intermodulated Fluorescence Spectroscopy.- 3.4 Double Resonance Spectroscopy.- 3.4.1 Microwave or Radio Frequency Optical Double Resonance.- 3.4.2 An MODR Spectrometer to Study Transient Molecules.- 3.4.3 Infrared-Optical Double Resonance.- 3.5 Generation of Transient Molecules.- 4. Individual Molecules.- 4.1 Diatomic Free Radicals.- 4.1.1 2? and 3? Diatomic Molecules.- 4.1.2 2? Diatomic Molecules.- 4.1.3 Molecules in ? States.- 4.2 Linear Polyatomic Molecules.- 4.2.1 Molecules in ? Electronic States.- 4.2.2 Molecules in ? Electronic States.- 4.3 Nonlinear XY2- and XYZ-Type Triatomic Free Radicals.- 4.3.1 Nonlinear XYZ-Type Free Radicals of Cs Symmetry.- 4.3.2 Nonlinear XY2 -Type Free Radicals of C2v Symmetry.- 4.3.3 Molecular Structure and Anharmonic Potential Constants of Nonlinear XYZ-Type Molecules of Cs Symmetry.- 4.4 Symmetric Top and Other Polyatomic Free Radicals.- 4.4.1 The Methyl Radical CH3.- 4.4.2 The Trifluoromethyl Radical CF3.- 4.4.3 Structures and Internal Motions of the Methyl Radical and Its Derivatives.- 4.4.4 The NO3 Radical.- 4.4.5 The Methoxy Radical CH3O.- 4.5 Fine and Hyperfme Interactions in Free Radicals.- 4.5.1 Hyperfme Interaction Constants of Diatomic Molecules.- 4.5.2 Spin-Rotation Interaction in Nonlinear Polyatomic Molecules.- 4.5.3 Hyperfme Interaction in Nonlinear Polyatomic Molecules.- 4.6 Molecules in Metastable Electronic States.- 4.6.1 LEF and MODR Study of H2CS in the a3A2 State.- 4.6.2 Perturbations in the Singlet-Singlet Transition of a Few Simple Carbenes.- 5. Applications and Future Prospects.- 5.1 Applications to Chemical Reactions.- 5.2 Applications to Atmospheric Chemistry.- 5.3 Applications to Astronomy.- 5.3.1 HCCN.- 5.3.2 Phosphorus-Containing Compounds.- 5.4 Future Developments.- 5.4.1 Possible Improvements of Spectroscopic Techniques.- 5.4.2 Future Trends in High-Resolution Spectroscopic Studies of Transient Molecules.- References.
TL;DR: In this article, several methods for electron number density (Ne) determination in a SF6 arc plasma are successively described: two-wave laser interferometry, Stark broadening of neutral sulphur lines, an original method derived from Stark broadens of a sulphur triplet, the recombination continuum and the derivation of Ne from temperature measurement.
Abstract: Several methods for electron number density (Ne) determination in a SF6 arc plasma are successively described: two-wave laser interferometry, Stark broadening of neutral sulphur lines, an original method derived from Stark broadening of a sulphur triplet, the recombination continuum and the derivation of Ne from temperature measurement. The results are in good agreement; they show the existence of departures from LTE due to a demixing effect.
TL;DR: A large optical Stark effect has been observed in the two-photon spectrum X(2)Pi yields A( 2)Sigma(+)reverse arrow in NO and a theoretical analysis is presented along with coupling parameters determined from ab initio wave functions.
Abstract: A large optical Stark effect has been observed in the two-photon spectrum X(2)Pi yields A(2)Sigma(+) - in NO. It is explained as a near-resonant process in which the upper state of the two-photon transition is perturbed by interactions with higher-lying electronic states coupled by the laser field. A theoretical analysis is presented along with coupling parameters determined from ab initio wave functions. The synthetic spectrum reproduces the major experimental features.
TL;DR: In this article, the inverse Raman band shape in the vicinity of single photon resonance is interpreted in terms of both a double quantum transition and a dynamical Stark effect, and it is pointed out that what is measured in the inverse-Raman spectroscopy is not identical with what was measured in corresponding Raman gain-spectroscopy.
Abstract: The inverse Raman band shape in the vicinity of single photon resonance is interpreted in terms of both a double quantum transition and a dynamical Stark effect. It is pointed out that what is measured in the inverse Raman spectroscopy is not identical with what is measured in the corresponding Raman gain spectroscopy. The absorption change due to the dynamical Stark effect is shown to explain well the band shape as well as the position of the inverse Raman spectrum.
TL;DR: Because of the excellent signal to noise ratio of the enhanced modulations, the field dependence of the spacings was able to be measured with sufficient accuracy to confirm the (3/4) power law and rule out the recently suggested (2/3) powerlaw.
Abstract: We present calculations of the photoionization spectrum of excited hydrogen using \ensuremath{\pi} polarization in the presence of a strong electric field as a function of the spherical (applicable to complex atoms) and parabolic quantum numbers of the excited state. We also present corresponding measurements of the photoionization yield from the individual parabolic states of n=2. Both the calculations and the measurements show an enhancement of the depth of the so-called ``Stark-induced modulation'' in the region E\ensuremath{\ge}0 when the initial excited state is a pure ${m}_{l}$=0 blue state, and disappear almost completely when the initial state is a pure ${m}_{l}$=0 red state. These results are understood using arguments based on the fact that the charge distribution of the Stark-induced states is tremendously extended up field. Because of the excellent signal to noise ratio of the enhanced modulations, we were able to measure the field dependence of the spacings with sufficient accuracy to confirm the (3/4) power law and rule out the recently suggested (2/3) power law.
TL;DR: Deductions de la presence d'au moins deux conformations, des composants du moment dipolaire et des constantes de rotation are discussed in this article.
Abstract: Deductions de la presence d'au moins deux conformations, des composants du moment dipolaire et des constantes de rotation