Rb-Xe spin relaxation in dilute Xe mixtures

Rb-Xe spin relaxation in dilute Xe mixtures
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DOI:
10.1103/physreva.65.012712
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发表时间:
2002-01-01
期刊:
影响因子:
2.9
通讯作者:
Walker, TG
Walker, TG
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Nelson, IA;Walker, TG

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我们测量了Rb原子在He(98%)-N-2(1%)-NH3(1%)混合物中的自旋弛豫,类似于磁共振成像偏振器中使用的那些。压力的依赖性使我们能够分离出的贡献,从Rb的货车范德华分子和二进制碰撞,第一次,我们观察到的预测增加的分子贡献在高压下。我们的数据表明,推导的分子破碎率有很强的温度依赖性。
We present measurements of spin-relaxation of Rb atoms in He(98%)-N-2(1%)-Xe(1%) mixtures similar to those used in magnetic resonance imaging polarizers. The pressure dependence allows us to separate out contributions from Rb-Xe van der Waals molecules and binary collisions, For the first time, we observe the predicted increase in the molecular contribution at high pressure. Our data suggest that the deduced molecular breakup rate has a strong temperature dependence.