Rotational-coherence molecular laser isotope separation

被引：10

作者：

Akagi, H. ^{[1
]}

Ohba, H. ^{[1
]}

Yokoyama, K. ^{[1
]}

Yokoyama, A. ^{[1
]}

Egashira, K. ^{[2
]}

Fujimura, Y. ^{[3
]}

机构：

[1] Japan Atom Energy Agcy, Quantum Beam Sci Directorate, Tokai, Ibaraki 3191195, Japan

[2] Genesis Res Inst Inc, E Tokyo Lab, Chiba 2720001, Japan

[3] Kanagawa Inst Technol, Kanagawa 2430292, Japan

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 2009年 / 95卷 / 01期

关键词：

INFRARED MULTIPHOTON DISSOCIATION; FOURIER-TRANSFORM SPECTROSCOPY; BROMINE; SPECTRUM; SILICON; SYSTEM; STATE;

D O I：

10.1007/s00340-009-3453-8

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have proposed a laser isotope separation method, utilizing rotational coherence of a simple molecule. In the scheme, photoexcited molecules are isotopically separated by difference of rotational period between them. To illustrate this method, two-pulse photodissociation of mixed (79)Br(2)/(81)Br(2) isotopes has been investigated theoretically. The photodissociation probabilities of (79)Br(2) and (81)Br(2) have been calculated as functions of time delay between the photoexcitation and dissociation laser pulses. We have demonstrated that isotope enrichment factor of (79)Br relative to (81)Br can be changed from 0.34 to 1.8, by simply changing the time delay only by 0.2 ns. Additionally, we have shown that this method is effective for heavy isotopes, based on mass dependence of the isotope enrichment factor.

引用

页码：17 / 21

页数：5

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