Radiative lifetime measurements of the B (2)Sigma(+) state of BaH by laser spectroscopy

被引：14

作者：

Berg, LE

Ekvall, K

Hishikawa, A

Kelly, S

机构：

[1] UNIV TOKYO,DEPT PURE & APPL SCI,MEGURO KU,TOKYO 153,JAPAN

[2] NATL UNIV IRELAND UNIV COLL DUBLIN,DEPT PHYS,DUBLIN 4,IRELAND

来源：

PHYSICA SCRIPTA | 1997年 / 55卷 / 03期

关键词：

D O I：

10.1088/0031-8949/55/3/003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

By applying laser resonance methods in the near infrared wavelength region around 900 nm, a time-resolved experiment has been performed on the low lying B (2) Sigma(+) state of barium hydride. The radiative lifetime is shown to vary with the rotational quantum number due to perturbations between the low lying A' 2 Delta, A (2) Pi and B (2) Sigma(+) states. The following lifetime was obtained for the BaH molecule, where local perturbations are assumed to be negligible: tau(B (2) Sigma(+)(upsilon' = 0, J = 5.5))= 125 +/- 2ns.

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页码：269 / 272

页数：4

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