A MEASUREMENT OF THE J=2[-1 FINE-STRUCTURE INTERVAL FOR SI-28 AND SI-29 IN THE GROUND P-3 STATE

被引：11

作者：

BROWN, JM ^{[1
]}

ZINK, LR ^{[1
]}

EVENSON, KM ^{[1
]}

机构：

[1] NATL INST STAND & TECHNOL,DIV TIME & FREQUENCY,BOULDER,CO 80303

来源：

ASTROPHYSICAL JOURNAL | 1994年 / 423卷 / 02期

关键词：

ATOMIC DATA; LINE; IDENTIFICATION; ISM; ATOMS; RADIO LINES;

D O I：

10.1086/187259

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We report the first observation of the far-infrared laser magnetic resonance spectrum associated with the J = 2 <-- 1 fine-structure interval of Si-28 and Si-29 in the 3P ground state. In Si-28 this separation is 4378.3280(2) GHz, and for Si-29 it is 4378.3306(6) GHz. The magnetic hyperfine parameter A2 has also been determined for Si-29 apparently for the first time. The value obtained corresponds to a value for the electronic expectation value [r-3]l of 1.626 x 10(31) m-3. Zero-field transition frequencies for the hyperfine components of the J = 2 <-- 1 transition in Si-29 are determined and will aid in their identification in interstellar sources.

引用

页码：L151 / L154

页数：4

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