Transmission Zeeman beat spectroscopy: Application to the 4 f sup 6 6 s sup 2 sup 7 F ground-level term of Sm I
Journal Article
·
· Physical Review, A; (USA)
- Commonwealth Scientific and Industrial Research Organization, Division of Materials Science and Technology, Clayton, Victoria 3168, Australia (AU)
A spectroscopic technique for the accurate determination of multipole relaxation rates in ground- or near-ground atomic levels is described. The technique is based on the detection of Zeeman quantum beats in transmission geometry and yields relaxation rates for the destruction of both orientation and alignment. Collisional depolarization cross sections are reported for the 4{ital f}{sup 6}6{ital s}{sup 2} {sup 7}{ital F}{sub {ital J}} ({ital J}=1--6) ground-term levels in samarium I by various rare-gas perturbers. For the {sup 7}{ital F}{sub 1} level the ratios of the cross sections for the destruction of orientation and alignment are unusually large ({sigma}{sub 1}/{sigma}{sub 2}{approx}1.6 for each of the rare-gas perturbers), whereas for the {ital J}=2--6 levels the reverse is true ({sigma}{sub 1}/{sigma}{sub 2} in the range 0.39 to 0.46 for argon perturbers). These values of {sigma}{sub 1}/{sigma}{sub 2} are found to be in agreement with the predictions of a weak-collision model in which the collision interaction has an essentially pure quadrupole character. The observed cross sections for the {sup 7}{ital F}{sub 1} level appear to be the first experimental realization of the simple theoretical result, {sigma}{sub 1}/{sigma}{sub 2}=5/3, initially obtained by Omont (J. Phys. (Paris) 26, 26 (1965)).
- OSTI ID:
- 6153904
- Journal Information:
- Physical Review, A; (USA), Journal Name: Physical Review, A; (USA) Vol. 42:11; ISSN 1050-2947; ISSN PLRAA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Determination of ground-level depolarization rates by transmission Zeeman beat spectroscopy: Application to Sm I 4f/sup 6/6s/sup 2/ /sup 7/F/sub 1/
Ba(6[ital s]6[ital p] [sup 1][ital P][sub 1,][ital m[ital j]])[r arrow]Ba(6[ital s]6[ital p] [sup 3][ital P][sub 2,][ital m[ital j]][sup [prime]]) Zeeman cross sections in single collisions with N[sub 2], O[sub 2], and H[sub 2]
Pion scattering to 6 sup minus stretched states in sup 24 Mg and sup 26 Mg
Journal Article
·
Mon Nov 30 23:00:00 EST 1987
· Phys. Rev. A; (United States)
·
OSTI ID:5714277
Ba(6[ital s]6[ital p] [sup 1][ital P][sub 1,][ital m[ital j]])[r arrow]Ba(6[ital s]6[ital p] [sup 3][ital P][sub 2,][ital m[ital j]][sup [prime]]) Zeeman cross sections in single collisions with N[sub 2], O[sub 2], and H[sub 2]
Journal Article
·
Thu Dec 31 19:00:00 EST 1992
· Physical Review A; (United States)
·
OSTI ID:6942012
Pion scattering to 6 sup minus stretched states in sup 24 Mg and sup 26 Mg
Journal Article
·
Sat Nov 30 23:00:00 EST 1991
· Physical Review, C (Nuclear Physics); (United States)
·
OSTI ID:5081676