Hyperfine Structure of the(5p)5(6s)P2

Abstract

The hyperfine structures of the metastable (5p) 5 (6s) *P<i state of 54 Xe 123 and 54Xe 131 have been measured by the atomic beam magnetic resonance method. The zero magnetic field intervals f{F <-> F') are: for Xe 129 , /(!<-> t) =5961.2577 (9) Mc/sec; and for Xe 131 , /(f <-> j) = 2693.6234(7) Mc/sec, /($<-»}) = 1608.3475(8) Mc/sec, and /(J <-> §) = 838.7636(4) Mc/sec. The values of the quadrupole and octupole moments of Xe 131 , without polarization corrections and without corrections for any effects of configuration mixing, are Q = -0.120(12) b and 0=+0.048(12) nmb. The hyperfine-structure anomaly for the two isotopes due to the s% electron alone is A(%) = +0.0440(44)%, in disagreement with the prediction of the single-particle model. hfs OF (5p)*(6s)*P 2 STATE OF 54 Xe 129 AND t Xe ] **> "*-!• O MEASURED Xe 10 '* + 0.169 (40) O MEASURED Hg 20, » -0.348(35) -2 FIG. 5. Octupole moments in the single-particle model for odd-neutron nuclei. g s --3.83.smaller than the value predicted by the single-particle model. The anomalies for these nuclei are the first determined for odd-neutron even-proton nuclei.

Spectroscopic nuclear quadrupole moments

“…The Q(63Cu) of (-)0.220 (15) (32) Xenon. The earlier value of Q(I3'Xe) came from the 5p56s, 3P2 state of neutral Xe [66] and was -120( 12) mb. It was essentially reconfirmed by Paduch and Bieron [67] who used MCDF calculations on a number of 5p45d and 5p46p states of Xe+ to deduce a new value of -117(6) mb.…”

Millimeter-wave spectroscopy and multichannel quantum-defect-theory analysis of high Rydberg states of xenon: The hyperfine structure ofXe129+andSchäfer1, Raunhardt2, Merkt3 2010Phys. Rev. A

“…The contribution from the octupole coupling is many orders of magnitude smaller [12,72] and thus neglected here. In analogy to Eq.…”

Polarization and hyperfine transitions of metastableXe129in discharge cells

“…Studies of F = 0 radiofrequency (rf) resonances for the the F = 5/2 and F = 3/2 of metastable 129 Xe (I = 1/2) have been reported by [6]. Measurements of F = 1 resonances in metastable noble gas atoms have been made in atomic beam experiments and at cryogenic temperatures [10][11][12]. Unlike earlier work, which mostly used F = 0 rf resonances for monitoring spin polarization of even isotopes of the metastable atoms, the work reported here was focused on the isotope 129 Xe, where we used both F = 0 rf resonances and F = 1 microwave resonances.…”