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V. S. Letokhov

Bio: V. S. Letokhov is an academic researcher. The author has contributed to research in topics: Ionization & Photoionization. The author has an hindex of 3, co-authored 4 publications receiving 107 citations.

Papers
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01 Jan 1991
TL;DR: In this paper, high-resolution laser spectroscopy for the study of nuclear sizes and shapes has been used for the detection of single atoms and ionization of atoms for nuclear physics.
Abstract: High-resolution laser spectroscopy for the study of nuclear sizes and shapes J Billowes and P Campbell High resolution laser spectroscopy of atomic systems R C Thompson High-resolution laser spectroscopy of Fr ns and nd Rydberg levels E Arnold, W Borchers, M Carre et al. Resonance laser ionization of atoms for nuclear physics V N Fedosseev, Yu Kudryavtsev and V I Mishin Laser detection of single atoms Viktor I Balykin, G I Bekov, V S Letokhov et al. Precision atomic physics techniques for nuclear physics with radioactive beams Klaus Blaum, Jens Dilling and Wilfried Nortershauser Resonance ionization spectroscopy on a fast atomic ytterbium beam

56 citations

Journal ArticleDOI
TL;DR: In this paper, the authors applied resonance ionization spectroscopy in collinear geometry to a fast beam of ytterbium atoms, where the atoms were excited stepwise into a Rydberg state by pulsed laser light and deflected onto a secondary electron detector.
Abstract: Resonance ionization spectroscopy in collinear geometry has been successfully applied to a fast beam of ytterbium atoms. The atoms were excited stepwise into a Rydberg state by pulsed laser light, ionized in an electrical field and deflected onto a secondary electron detector. The efficiency was 1*10-5 detected ions per incoming atom on a background from collisional ionization of 1*10-8. The technique has been exploited for the measurement of hyperfine structures and isotope shifts of unstable ytterbium isotopes, in particular 157Yb, 159Yb and 175Yb.

55 citations

Proceedings ArticleDOI
01 Apr 1995
TL;DR: In this paper, it was shown that there are two main processes that produce the collisional background in the method of the collinear laser photoionization of fast atoms, the first process is the ionization and the second one is collisional excitation of fast objects into Rydberg states.
Abstract: We showed that there are two main processes that produce the collisional background in the method of the collinear laser photoionization of fast atoms. The first process is the ionization of fast atoms and the second one is the collisional excitation of fast atoms into Rydberg states.The first experimental results on Rydberg states formation cross sections in atomic collisions were obtained. For the first time it has been experimentally obtained such cross sections scaled as n−3.To reduce the collisional noise the use of fast Rydberg atoms ionization in permanent magnetic field is proposed.

3 citations

Proceedings ArticleDOI
01 Apr 1995
TL;DR: In this paper, a new type of field ionizer for fast Rydberg atoms based on permanent magnetic field is developed, which can be very useful for RIS applications, as distinct from electric field ionization, the ions and electrons resulting from ionization in magnetic field conserve their kinetic energies.
Abstract: New type of field ionizer for fast Rydberg atoms based on permanent magnetic field is developed. As distinct from electric field ionization, the ions and electrons resulting from ionization in magnetic field conserve their kinetic energies. This property can be very useful for RIS applications.

2 citations


Cited by
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Journal ArticleDOI
TL;DR: In this article, the authors present a review of the state-of-the-art in high-resolution laser spectroscopy for the study of nuclear shape, size and multipole moments.

217 citations

Journal ArticleDOI
TL;DR: In this article, the basic principles of laser spectroscopic investigations, Penning-trap and storage-ring mass measurements of short-lived nuclei are summarized and selected physics results are discussed.
Abstract: Atomic physics techniques for the determination of ground-state properties of radioactive isotopes are very sensitive and provide accurate masses, binding energies, Q-values, charge radii, spins and electromagnetic moments. Many fields in nuclear physics benefit from these highly accurate numbers. They give insight into details of the nuclear structure for a better understanding of the underlying effective interactions, provide important input for studies of fundamental symmetries in physics, and help to understand the nucleosynthesis processes that are responsible for the observed chemical abundances in the Universe. Penning-trap and storage-ring mass spectrometry as well as laser spectroscopy of radioactive nuclei have now been used for a long time but significant progress has been achieved in these fields within the last decade. The basic principles of laser spectroscopic investigations, Penning-trap and storage-ring mass measurements of short-lived nuclei are summarized and selected physics results are discussed.

196 citations

Journal ArticleDOI
TL;DR: The research reactor TRIGA Mainz is an ideal facility to provide neutron-rich nuclides with production rates sufficiently large for mass spectrometric and laser spectroscopic studies.
Abstract: The research reactor TRIGA Mainz is an ideal facility to provide neutron-rich nuclides with production rates sufficiently large for mass spectrometric and laser spectroscopic studies. Within the TRIGA-SPEC project, a Penning trap as well as a beamline for collinear laser spectroscopy are being installed. Several new developments will ensure high sensitivity of the trap setup enabling mass measurements even on a single ion. Besides neutron-rich fission products produced in the reactor, also heavy nuclides such as 235 U or 252 Cf can be investigated for the first time with an off-line ion source. The data provided by the mass measurements will be of interest for astrophysical calculations on the rapid neutron-capture process as well as for tests of mass models in the heavy-mass region. The laser spectroscopic measurements will yield model-independent information on nuclear ground-state properties such as nuclear moments and charge radii of neutron-rich nuclei of refractory elements far from stability. TRIGA-SPEC also serves as a test facility for mass and laser spectroscopic experiments at SHIPTRAP and the low-energy branch of the future GSI facility FAIR. This publication describes the experimental setup as well as its present status.

111 citations

Journal ArticleDOI
TL;DR: The applications of the laser resonance ionization method in nuclear research are reviewed in this paper, where a summary of ionization schemes applied to radioactive isotopes is given in table form.
Abstract: The applications of the laser resonance ionization method in nuclear research are reviewed. Investigation of radioactive isotopes using resonance ionization techniques provides a valuable combination of high selectivity, efficiency and spectral resolution. The majority of radioactive ion beams produced at on-line isotope separator facilities profit from the selectivity and universal applicability of laser ion sources. Numerous ultra-sensitive and high-resolution techniques of laser spectroscopy based on resonance ionization of atoms have been developed for the study of rare and radioactive isotopes. A summary of ionization schemes applied to radioactive isotopes is given in table form.

97 citations

Journal ArticleDOI
TL;DR: In this paper, a detailed inspection of the apparent similarities seen between neighbouring chains in different regions of the nuclear chart is carried out, with an emphasis on the techniques used for rare and radioactive species.
Abstract: Modern techniques of laser spectroscopy enable measurements of optical isotope shifts and hyperfine structures to be extended across long chains of isotopes reaching far from the region of stability. While the hyperfine structure yields precise information on the spin and electromagnetic moments of the nucleus, the isotope shifts are sensitive to small differential changes in size and shape of the nuclear charge distribution. The experimental situation is reviewed, with an emphasis on the techniques used for rare and radioactive species. The status of the experimental data is summarized. Modified King plots are used to make a detailed inspection of the apparent similarities seen between neighbouring chains in different regions of the nuclear chart.

89 citations