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
收藏
页码：L85 / L87
页数：3
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