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Electronic gJ Factors, Natural Lifetimes, and Electric Quadrupole Interaction for Rb 87 in the np ^(2)P_(3/2) Series of the Rb I Spectrum

Belin, G and Svanberg, Sune LU (1971) In Physica Scripta 4(6). p.269-273
Abstract
For Rb 87 the level crossing method was applied to the first four levels ( n = 5, 6, 7, and 8) of the np 2 P 3/2 series in the Rb I spectrum. By using magnetic dipole interaction constants from corresponding zero field optical double resonance experiments, the electronic g J factors of 5, 6, and 7 p 2 P 3/2 were calculated from the level crossing data. For these levels the natural radiative lifetimes were determined from the half-widths of the level crossing signals. For 8 p 2 P 3/2 the a factor was obtained assuming g J = -1.336 (2). From the measured electric quadrupole interaction constants b , decreasing values of the nuclear quadrupole moment Q were obtained in 5, 6, 7, and 8 p 2 P 3/2 . When core polarization effects are taken into... (More)
For Rb 87 the level crossing method was applied to the first four levels ( n = 5, 6, 7, and 8) of the np 2 P 3/2 series in the Rb I spectrum. By using magnetic dipole interaction constants from corresponding zero field optical double resonance experiments, the electronic g J factors of 5, 6, and 7 p 2 P 3/2 were calculated from the level crossing data. For these levels the natural radiative lifetimes were determined from the half-widths of the level crossing signals. For 8 p 2 P 3/2 the a factor was obtained assuming g J = -1.336 (2). From the measured electric quadrupole interaction constants b , decreasing values of the nuclear quadrupole moment Q were obtained in 5, 6, 7, and 8 p 2 P 3/2 . When core polarization effects are taken into account, the different 2 P 3/2 levels yield consistent values for the quadrupole moment. We find ----- -- g J (5 p 2 P 3/2 ) = -1.3362 (6) -- g J (6 p 2 P 3/2 ) = -1.3347 (10) ----- -- Ï (5 p 2 P 3/2 ) = 25.8 (8) ns -- Ï (6 p 2 P 3/2 ) = 111 (3) ns ----- -- b (5 p 2 P 3/2 ) = 12.510 (57) MHz -- b (6 p 2 P 3/2 ) = 3.947 (13) MHz ----- -- Q (5 p 2 P 3/2 ) = 0.131 barn -- Q (6 p 2 P 3/2 ) = 0.133 barn ----- -- g J (7 p 2 P 3/2 ) = -1.3359 (11) -- a (8 p 2 P 3/2 ) = 6.747 (14) MHz ----- -- Ï (7 p 2 P 3/2 ) = 233 (10) ns -- b (8 p 2 P 3/2 ) = 0.933 (20) MHz ----- -- b (7 p 2 P 3/2 ) = 1.768 (8) MHz -- Q (8 p 2 P 3/2 ) = 0.131 barn ----- -- Q (7 p 2 P 3/2 ) = 0.133 barn -- ----- Considering possible sources of error in the evaluation of the quadrupole moment we obtain Q (Rb 87 ) = +0.132 (9) barn. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Physica Scripta
volume
4
issue
6
pages
269 - 273
publisher
Institute of Physics Publishing Ltd.
external identifiers
  • Scopus:84921186114
ISSN
0031-8949
DOI
10.1088/0031-8949/4/6/006
language
English
LU publication?
yes
id
6f8fb0f8-e330-4576-b79b-918ddad57d21 (old id 2257459)
date added to LUP
2012-02-23 23:43:35
date last changed
2016-09-13 15:20:08
@misc{6f8fb0f8-e330-4576-b79b-918ddad57d21,
  abstract     = {For Rb 87 the level crossing method was applied to the first four levels ( n = 5, 6, 7, and 8) of the np 2 P 3/2 series in the Rb I spectrum. By using magnetic dipole interaction constants from corresponding zero field optical double resonance experiments, the electronic g J factors of 5, 6, and 7 p 2 P 3/2 were calculated from the level crossing data. For these levels the natural radiative lifetimes were determined from the half-widths of the level crossing signals. For 8 p 2 P 3/2 the a factor was obtained assuming g J = -1.336 (2). From the measured electric quadrupole interaction constants b , decreasing values of the nuclear quadrupole moment Q were obtained in 5, 6, 7, and 8 p 2 P 3/2 . When core polarization effects are taken into account, the different 2 P 3/2 levels yield consistent values for the quadrupole moment. We find ----- -- g J (5 p 2 P 3/2 ) = -1.3362 (6) -- g J (6 p 2 P 3/2 ) = -1.3347 (10) ----- -- Ï (5 p 2 P 3/2 ) = 25.8 (8) ns -- Ï (6 p 2 P 3/2 ) = 111 (3) ns ----- -- b (5 p 2 P 3/2 ) = 12.510 (57) MHz -- b (6 p 2 P 3/2 ) = 3.947 (13) MHz ----- -- Q (5 p 2 P 3/2 ) = 0.131 barn -- Q (6 p 2 P 3/2 ) = 0.133 barn ----- -- g J (7 p 2 P 3/2 ) = -1.3359 (11) -- a (8 p 2 P 3/2 ) = 6.747 (14) MHz ----- -- Ï (7 p 2 P 3/2 ) = 233 (10) ns -- b (8 p 2 P 3/2 ) = 0.933 (20) MHz ----- -- b (7 p 2 P 3/2 ) = 1.768 (8) MHz -- Q (8 p 2 P 3/2 ) = 0.131 barn ----- -- Q (7 p 2 P 3/2 ) = 0.133 barn -- ----- Considering possible sources of error in the evaluation of the quadrupole moment we obtain Q (Rb 87 ) = +0.132 (9) barn.},
  author       = {Belin, G and Svanberg, Sune},
  issn         = {0031-8949},
  language     = {eng},
  number       = {6},
  pages        = {269--273},
  publisher    = {ARRAY(0x79fcdf8)},
  series       = {Physica Scripta},
  title        = {Electronic gJ Factors, Natural Lifetimes, and Electric Quadrupole Interaction for Rb 87 in the np ^(2)P_(3/2) Series of the Rb I Spectrum},
  url          = {http://dx.doi.org/10.1088/0031-8949/4/6/006},
  volume       = {4},
  year         = {1971},
}