Decay rate measurement of the first vibrationally excited state of MgH+ in a cryogenic Paul trap.
Decay rate measurement of the first vibrationally excited state of MgH+ in a cryogenic Paul trap.
复制标题
低温保罗陷阱中 MgH 第一振动激发态的衰减率测量。
DOI：
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发表时间：
2013
影响因子：
8.6
通讯作者：
M. Drewsen
中科院分区：
文献类型：
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作者：
O. Versolato;M. Schwarz;A. K. Hansen;A. Gingell;A. Windberger;L. Kłosowski;J. Ullrich;F. Jensen;José R. Crespo López;M. Drewsen
我们提出了一种方法来测量的第一激发振动态的极性分子离子，库仑晶体的一部分，在低温线性保罗陷阱的衰减率。具体来说，我们已经监测了|v = 1，J = 1）（X）朝向|用饱和激光激发MgH ~+的（ν = 0，J = 0）（X）能级|v = 0，J = 2）（X）-|ν = 1，J = 1）（X）跃迁后的态选择共振增强的双光子解离|ν = 0，J=2）（X）水平。实验观察到的速率为6.32（0.69）s（-1），与理论值6.13（0.03）s（-1）非常一致（本函）。该技术能够确定衰减率，从而吸收强度，精度在百分之几的水平。
We present a method to measure the decay rate of the first excited vibrational state of polar molecular ions that are part of a Coulomb crystal in a cryogenic linear Paul trap. Specifically, we have monitored the decay of the |ν = 1, J = 1)(X) towards the |ν = 0, J = 0)(X) level in MgH+ by saturated laser excitation of the |ν = 0, J = 2)(X)-|ν = 1, J = 1)(X) transition followed by state selective resonance enhanced two-photon dissociation out of the |ν = 0, J=2)(X) level. The experimentally observed rate of 6.32(0.69) s(-1) is in excellent agreement with the theory value of 6.13(0.03) s(-1) (this Letter). The technique enables the determination of decay rates, and thus absorption strengths, with an accuracy at the few percent level.