Dissociative recombination of HeH+ isotopes with an ultra-cold electron beam from a superconducting electron cooler in a storage ring

被引：32

作者：

Tanabe, T ^{[1
]}

Katayama, I

Ono, S

Chida, K

Watanabe, T

Arakaki, Y

Haruyama, Y

Saito, M

Odagiri, T

Hosono, K

Noda, K

Honma, T

Takagi, H

机构：

[1] Univ Tokyo, Ctr Nucl Study, Tanashi, Tokyo 188, Japan

[2] High Energy Accelerator Res Org, Tanashi, Tokyo 188, Japan

[3] Kyoto Prefectural Univ, Sakyo Ku, Kyoto 606, Japan

[4] Tokyo Inst Technol, Meguro Ku, Tokyo 152, Japan

[5] Himeji Inst Technol, Himeji, Hyogo 67122, Japan

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1998年 / 31卷 / 07期

关键词：

D O I：

10.1088/0953-4075/31/7/003

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The dissociative recombinations of (HeH+)-He-3, (HeH+)-He-4, (HeD+)-He-3 and (HeD+)-He-4 were studied with an extremely low-temperature electron beam of the order of 1 meV produced by a superconducting electron cooler at the storage ring TARN II. The dissociative recombination spectra show a fine new structure and a clear isotope dependence in the low-energy region. Those features are well reproduced by the theoretical calculations based on a multichannel quantum-defect theory including rotational motion and discretized dissociative states. According to the theory, the newly observed structure is evidence for a new indirect mechanism where the intermediate states are not vibrationally excited Rydberg states but virtual dissociative states.

引用

页码：L297 / L303

页数：7

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