LIFETIME OF THE HE2(E), HE2(D) AND HE2(F) STATES

被引：7

作者：

NEESER, S

TIETZ, R

SCHULZ, M

LANGHOFF, H

机构：

[1] Physikalisches Institut der Universität Würzburg, Am Hubland, Würzburg

来源：

ZEITSCHRIFT FUR PHYSIK D-ATOMS MOLECULES AND CLUSTERS | 1994年 / 31卷 / 1-2期

关键词：

33.20.Kf; 34.50.Gb;

D O I：

10.1007/BF01426580

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

Starting from the He-2(a) state absorption and induced fluorescence experiments were performed using a narrow band dye laser. The saturation intensity for the He-2(e)<--He-2(a) transition yields a radiative lifetime of tau = (67 +/- 10) ns. Time resolved measurements of the laser induced fluorescence yield the radiative lifetimes for the states He-2(e): (57 +/- 10) ns, He-2(d): (25 +/- 5) ns and He-2(f): (19 +/- 5) ns. From the time integrated fluorescence data the collisional quenching rates between the above states were determined.

引用

页码：61 / 65

页数：5

共 10 条

[1]

BROWN CM, 1971, J MOL SPECTROSC, V40, P5

[2]

CALLEAR AB, 1970, T FARADAY SOC, V66, P2951

[3] STUDY OF EXCITATION TRANSFER IN A FLOWING HELIUM AFTERGLOW PUMPED WITH A TUNABLE DYE LASER .2. MEASUREMENT OF RATE COEFFICIENT FOR ROTATIONAL RELAXATION OF HE2(3PPI-3/G [J].