Laboratory submillimeter-wave detection of D2H+:: A new probe into multiple deuteration?

被引：24

作者：

Hirao, T ^{[1
]}

Amano, T ^{[1
]}

机构：

[1] Ibaraki Univ, Inst Astrophys & Planetary Sci, Ibaraki 3108512, Japan

来源：

ASTROPHYSICAL JOURNAL | 2003年 / 597卷 / 01期

基金：

日本学术振兴会;

关键词：

astrochemistry; ISM : clouds; ISM : molecules; methods : laboratory; molecular data; submillimeter;

D O I：

10.1086/379801

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

A pure rotational transition (J(KaKc) = 1(10)-1(01)) of D2H+ is measured in the laboratory with a high-sensitivity submillimeter-wave spectrometer. The D2H+ ions are generated in an extended negative glow discharge in a mixture of H-2 and D-2 with Ar as buffer gas (H-2/D-2/Ar = 4/2/17 mTorr) near liquid nitrogen temperature (77 K). The transition frequency is determined to be 691.660440(19) GHz with 1 sigma in parentheses. This accurately measured transition frequency should be of great use for astronomical identification of this ion.

引用

页码：L85 / L87

页数：3

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