Sympathetic cooling of fluorine atoms with ultracold atomic hydrogen
Sympathetic cooling of fluorine atoms with ultracold atomic hydrogen
复制标题
氟原子与超冷原子氢的交感冷却
DOI：
10.1103/physreva.88.053420
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发表时间：
2013
影响因子：
2.9
通讯作者：
J. Hutson
中科院分区：
文献类型：
--
作者：
M. L. González;J. Hutson
我们考虑了利用超冷氢原子共振冷却氟原子的前景，
微开温度我们对冷F和H之间的碰撞进行了量子力学计算
原子的磁陷阱状态，并表明弹性与非弹性截面的比例仍然很高
在很宽的温度和磁场范围内。对于初始处于自旋拉伸态的F原子（2 P 3/2，
f = mf = +2），交感冷却似乎很可能从大约1 K甚至更低的起始温度成功。
高这是因为600 mK的p波和d波势垒抑制了非弹性碰撞
和3.2K高。结合H + NH和H + OH碰撞的最新结果[M. L.
Gonzalez-Martinez和J.M. Hutson，Phys. Rev. Lett. 111，203004（2013）]，这建立了超冷H原子
作为一种非常有前途和多用途的冷却剂，用于不能用激光冷却的原子和分子。
We consider the prospect of using ultracold hydrogen atoms for sympathetic cooling of fluorine atoms to
microkelvin temperatures. We carry out quantum-mechanical calculations on collisions between cold F and H
atoms in magnetically trappable states and show that the ratio of elastic to inelastic cross sections remains high
across a wide range of temperatures and magnetic fields. For F atoms initially in the spin-stretched state (2P3/2,
f = mf = +2), sympathetic cooling appears likely to succeed from starting temperatures around 1 K or even
higher. This occurs because inelastic collisions are suppressed by p-wave and d-wave barriers that are 600 mK
and 3.2 K high, respectively. In combination with recent results on H + NH and H + OH collisions [M. L.
Gonzalez-Martinez and J. M. Hutson, Phys. Rev. Lett. 111, 203004 (2013)], this establishes ultracold H atoms
as a very promising and versatile coolant for atoms and molecules that cannot be laser-cooled.
DOI：
10.1039/c0cp02472d
发表时间：
2011-04
期刊：
Physical chemistry chemical physics : PCCP
影响因子：
--
作者：
W. G. Doherty;M. T. Bell;T. Softley;A. Rowland;E. Wrede;D. Carty
通讯作者：
W. G. Doherty;M. T. Bell;T. Softley;A. Rowland;E. Wrede;D. Carty