This compilation extends the 1991 listing of atomic data by Morton to the heavier stable elements from germanium to bismuth Technetium, thorium, and uranium are added because they can live long enough to be astrophysically detectable The tabulation emphasizes resonance lines, ie, lines the lower level of which is the ground state, or an excited fine-structure state of the ground term, and is restricted to wavelengths longward of the H I Lyman limit at 91175 A This paper has attempted to review all data published by mid-1999 and includes some later material     The tables contain the best data available to the author on level designations, ionization potentials, vacuum and air wavelengths, lower and upper energy levels, statistical weights, transition probabilities, natural damping constants (reciprocal lifetimes), oscillator strengths, and the often-used combinations of log gf and log λf All ion stages with classified lines are included Individual components resulting from isotope shift and hyperfine structure are listed explicitly for Rb I, Cs I, Hg I and Hg II, Ti II, and Pb II The accompanying text provides references, explanations for the critical selection of data, and notes indicating where new measurements or calculations are needed     This compilation should be particularly useful in the analysis of interstellar and quasar absorption lines and other astrophysical sites where the density of particles and radiation is low enough to excite only the lowest atomic levels The data also are relevant to the study of stellar atmospheres, particularly those with enhanced abundances of heavy elements

https://iopscience.iop.org/article/10.1086/317349/pdf

Atomic Data for Resonance Absorption Lines. II. Wavelengths Longward of the Lyman Limit for Heavy Elements

: A revised and updated annotated bibliography on atomic transition probabilities covering the literature from 1914 through October 1977 is presented It contains approximately 2400 references and is divided into four main sections, with each article assigned a number The first section contains a listing, by number, of articles of general interest The second section lists by number all articles containing numerical data; it is arranged by element and stage of ionization and is further subdivided according to theoretical and experimental methods, comments, and compilations The third section contains a listing of all articles, including number, authors, title, and journal reference; it is arranged by year of publication and alphabetically by authors names within the year All foreign language papers are identified, and their titles are translated into English The final section contains a listing of all authors and the numbers of the papers they have authored or co-authored

Bibliography on Atomic Transition Probabilities: 1914 Through October 1977

Natural radiative lifetimes have been measured for three odd-parity levels of neutral lead using time-resolved UV laser-induced fluorescence from a laser-produced plasma. These new lifetimes, as well as additional recent values obtained by laser spectroscopy, combined with theoretical branching ratios deduced from a relativistic Hartree-Fock calculation taking core polarization effects into account, have allowed the deduction of a new set of accurate f-values of astrophysical interest. Using the new lifetime value for 6p7s (1/2, 1/2)(0)degrees, a refined value of the lead abundance in the solar photosphere is deduced: A(Pb) = 2.00 +/- 0.06 on the usual logarithmic scale, allowing the resolution of the long-standing discrepancy previously observed between the solar photosphere and meteorites.

New f‐values in neutral lead obtained by time‐resolved laser spectroscopy, and astrophysical applications

A compendium and critical review of neutral atom resonance line oscillator strengths for atomic absorption analysis

Atomic physics with ion accelerators — Beam-foil spectroscopy

Natural lifetimes of some highly excited levels in the Pb-I spectrum have been measured by the zero field level crossing (Hanle) method. The levels were reached by optical excitation from the metastable 6p
2 3
P
2 and 6p
2 3
P
1 states, were a considerable population had been created by means of adc discharge in a Pb atomic beam. An atomic beam source producing atoms in metastable states is described. For the lifetimes τ of the investigated levels we find:τ(6p(1/2)6d
3
D
1)=3.74(28) ns,τ(6p(1/2)6d
3
F
2)=25.8(1.3) ns,τ(6p(1/2)6d
3
D
2)=4.17(−31)
(−49) ns,τ(6p(1/2)6d
3
F
3)=6.08(26) ns,τ(6p(3/2)7s)3
P
2=5.85(27) ns. These results are compared with lifetimes derived from oscillator strengths given in the literature.

Lifetimes of some highly excited levels in the Pb-I spectrum measured by the Hanle method

As a first application of optical double resonance and zero field level crossing spectroscopy to the elements of the sixth group in the periodic table of the atoms, the 5p36s5S2 level in the Te-I spectrum was investigated using natural tellurium in a high temperature quartz cell. For the electronic Lande-factor and the natural radiative lifetime the following values were obtained:

$$g_J \left( {5p^3 6s^5 S_2 } \right) = - 1.9657\left( {12} \right),\tau \left( {5p^3 6s^5 S_2 } \right) = 71.8\left( {2.2} \right)ns.$$

Optical double resonance and zero field level crossing spectroscopy applied to the 5p^(3)6s^(5)S_(2) level in the Te-I spectrum

Using an enriched sample in a high temperature scattering cell we have determined the hyperfine structure of Te 125 in the 5 p 3 6 s 5 S 2 level of the Te I spectrum by the optical double resonance and level crossing techniques. For the magnetic dipole interaction constant a we obtain | a (5 p 3 6 s 5 S 2 Te 125 )| = 1 010.4 (1.3) MHz The spin density at the nucleus, calculated using this value, is compared with the value derived from optical data, and with the result of a self-consistent-field calculation.

Investigation of the Hyperfine Structure of Te 125 in the 5p^(3)6s^(5)S_(2) Level of the Te I Spectrum by Optical Double Resonance and Level Crossing Spectroscopy

S Garpman

Papers

Lifetimes of some highly excited levels in the Pb-I spectrum measured by the Hanle method

Optical double resonance and zero field level crossing spectroscopy applied to the 5p^(3)6s^(5)S_(2) level in the Te-I spectrum

Investigation of the Hyperfine Structure of Te 125 in the 5p^(3)6s^(5)S_(2) Level of the Te I Spectrum by Optical Double Resonance and Level Crossing Spectroscopy