K(6S)+H<sub>2</sub>→KH+H转动分辨反应截面的测量(英文)

王倩; 吉建强; 沈异凡; 戴康

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K(6S)+H₂→KH+H转动分辨反应截面的测量(英文)

更新时间：2026-01-21

- K(6S)+H₂→KH+H转动分辨反应截面的测量(英文)
- Journal of Xinjiang University (Natural Science Edition in Chinese and English) Vol. 29, Issue 4, Pages: 379-383(2012)
- 作者机构：
  
  新疆大学物理科学与技术学院
- 作者简介：
- 基金信息：
- DOI：
  CLC： O562
- Published：2012
- 稿件说明：
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[1]王倩,吉建强,沈异凡,等.K(6S)+H_2→KH+H转动分辨反应截面的测量(英文)[J].新疆大学学报(自然科学版),2012,29(04):379-383.

王倩, 吉建强, 沈异凡, et al. K(6S)+H₂→KH+H转动分辨反应截面的测量(英文)[J]. Journal of Xinjiang University (Natural Science Edition in Chinese and English), 2012, 29(4): 379-383.
[1]王倩,吉建强,沈异凡,等.K(6S)+H_2→KH+H转动分辨反应截面的测量(英文)[J].新疆大学学报(自然科学版),2012,29(04):379-383. DOI：

王倩, 吉建强, 沈异凡, et al. K(6S)+H₂→KH+H转动分辨反应截面的测量(英文)[J]. Journal of Xinjiang University (Natural Science Edition in Chinese and English), 2012, 29(4): 379-383. DOI：

摘要

利用泵浦-检测技术和光学吸收技术

对K(6S)与H2反应生成的初生态产物KH(X1Σ+

v=0

1)的转动态分布和反应截面作了测量。脉冲激光双光子激发K原子至K(6S)态

通过泵浦-探测技术确定了KH(X1Σ+

v=0

1)初生态的转动分布

转动分布接近样品池温时的统计分布。通过测量泵浦激光的能量损失确定K(6S)态原子密度

测量检测激光的吸收系数得到反应产物KH分子的密度

由速率方程分析可以得到转动分辨的反应截面

总的反应截面为所有转动分辨的反应截面之和

得到的反应截面分别为(1.3±0.5)×10-16cm2(对v=0)和(0.05±0.02)×10-16cm2(对v=1).

Abstract

Using pump-probe method and optical absorption technique

we have measured the nascent quantum state distributions of the KH product and the cross sections for reaction of K(6S) with H 2.The K(6S) state was excited with a pulsed laser by two-photon absorption.The nascent rotational distributions of KH(v=0

1) were determined from laserinduced fluorescence spectrum.The rotational population profiles were roughly consistent with a statistical distribution at the cell temperature.The densities of K(6S) atoms were evaluated directly from the pump laser energy loss which was absorbed by K atoms.The densities of KH molecules were measured by monitoring the absorption of a counterpropagating probe laser beam

tuned to X 1 Σ + A 1 Σ + transitions.Using a rate equation model

we obtained rotationally resolved reaction cross sections.The total cross sections obtained by summing the individual rotationally resolved cross sections are σ(v=0)=(1.3±0.5)×10-16cm2 and σ(v=1)=(0.05±0.02)×10-16cm2

respectively.

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references

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K(6S)+H2→KH+H转动分辨反应截面的测量(英文)

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摘要

Abstract

关键词

Keywords

references

K(6S)+H₂→KH+H转动分辨反应截面的测量(英文)