Multiphoton laser ionization for energy conversion in barium vapor

被引：10

作者：

Makdisi, Y. ^{[1
]}

Kokaj, J. ^{[1
]}

Afrousheh, K. ^{[1
]}

Mathew, J. ^{[1
]}

Nair, R. ^{[1
]}

Pichler, G. ^{[1
,2
]}

机构：

[1] Kuwait Univ, Dept Phys, Safat 13060, Kuwait

[2] Univ Zagreb, Inst Phys, Zagreb, Croatia

来源：

OPTICS COMMUNICATIONS | 2013年 / 290卷

关键词：

Multi photon laser ionization; Energy conversion; Barium vapor; Thermionic process; Heat-pipe oven; DIODE;

D O I：

10.1016/j.optcom.2012.10.031

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have studied the ion detection of barium atoms in special heated ovens with a tungsten rod in the middle of the stainless steel tube. The tungsten rod was heated indirectly by the oven body heaters. A bias voltage between the cell body and the tungsten rod of 9 V was used to collect electrons, after the barium ions had been created. However, we could collect the electrons even without the bias voltage, although with ten times less efficiency. We studied the conditions for the successful bias-less thermionic signal detection using excimer/dye laser two-photon excitation of Rydberg states below and above the first ionization limit (two-photon wavelength at 475.79 nm). We employed a hot-pipe oven and heat-pipe oven (with inserted mesh) in order to generate different barium vapor distributions inside the oven. The thermionic signal increased by a factor of two under heat-pipe oven conditions. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：95 / 99

页数：5

共 23 条

[1]

Adams SF, 2006, AIP CONF PROC, V813, P590, DOI 10.1063/1.2169239

[2] Spectroscopic studies of 5d3/2nd 1D0,2 autoionization lines of barium under collision with rare gases [J].