NONRADIATIVE PROCESS INDUCED BY EXTERNAL MAGNETIC-FIELDS IN THE C2H2 (A)OVER-TILDE (1)A(U) STATE NEAR PREDISSOCIATION LIMIT

被引：34

作者：

ABE, H

HAYASHI, H

机构：

[1] Molecular Photochemistry Laboratory, The Institute of Physical and Chemical Research (RIKEN), Wako, Saitama

来源：

CHEMICAL PHYSICS LETTERS | 1993年 / 206卷 / 1-4期

关键词：

D O I：

10.1016/0009-2614(93)85561-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Fluorescence excitation spectra of the V0nK01 (n = 1-4) vibronic bands of the C2H2 A state were measured under various magnetic fields up to 10 kG. It was found that external magnetic fields quench fluorescence remarkably from the levels near the predissociation threshold. From the observed vibrational-state, rotational-state, and field-strength dependences of the magnetic quenching, it could be interpreted in terms of the radiationless transition in magnetic fields. The vibrational-energy dependence of the quenching was found to be parallel to that of the Zeeman anticrossing density. The origin of the quenching was briefly discussed in connection with the predissociation.

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页码：337 / 342

页数：6

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