Zeeman deceleration of electron-impact-excited metastable helium atoms
Zeeman deceleration of electron-impact-excited metastable helium atoms
复制标题
电子碰撞激发亚稳态氦原子的塞曼减速
DOI:
10.1088/1367-2630/17/3/035005
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发表时间:
2015
影响因子:
3.3
通讯作者:
Dulitz K
中科院分区:
文献类型:
--
作者:
Dulitz K
We present experimental results that demonstrate—for the first time—the Zeeman deceleration of helium atoms in the metastable 2 3 S 1 state. A more than 40% decrease of the kinetic energy of the beam is achieved for deceleration from 490 ms− 1 to a final velocity of 370 ms− 1. Metastable atom generation is achieved with an electron-impact-excitation source whose performance is enhanced through an additional discharge-type process which we characterize in detail. Metastable helium is efficiently generated even in a mixture of other noble gases that have much lower excitation energies. Comparison of deceleration data at different electron beam pulse durations confirms that a matching between the initial particle distribution and the phase-space acceptance of the decelerator is crucial for the production of a decelerated packet with a well-defined velocity distribution. The experimental findings are in good agreement with three-dimensional numerical particle trajectory simulations.
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DOI:
--
发表时间:
1972
期刊:
影响因子:
--
作者:
A. Melamid;Zh. Kh. Khachatryan;A. Guzhov
通讯作者:
A. Guzhov
DOI:
--
发表时间:
1985
期刊:
影响因子:
--
作者:
M. Rees;G. Romick
通讯作者:
G. Romick
DOI:
--
发表时间:
1992
期刊:
影响因子:
--
作者:
S. Trajmar;J. C. Nickel
通讯作者:
J. C. Nickel
DOI:
--
发表时间:
1974
期刊:
影响因子:
--
作者:
M. Misakian;M. Mumma
通讯作者:
M. Mumma
DOI:
10.48550/arxiv.1501.02204
发表时间:
2015
期刊:
--
影响因子:
--
作者:
Dulitz K
通讯作者:
Dulitz K