Non-magnetic flexible heaters for spin-exchange optical pumping of 3He and other applications.
Non-magnetic flexible heaters for spin-exchange optical pumping of 3He and other applications.
复制标题
用于 3He 自旋交换光泵浦和其他应用的非磁性柔性加热器。
DOI：
10.1063/1.4967527
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
K. Sakai
中科院分区：
文献类型：
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作者：
T. Ino;H. Hayashida;H. Kira;T. Oku;K. Sakai
自旋极化3He气体目前广泛应用于各种科学领域和医学诊断应用中。3 He核的自旋极化可以通过自旋交换光抽运（SEOP）实现。在SEOP中，3He气体与碱金属一起被封闭在玻璃池中，然后被加热以将碱金属蒸气压保持在适当的水平。然而，极化的3He气体对其磁场中的任何不均匀性高度敏感，并且由加热器引起的任何小的场梯度都可能导致3He极化的劣化。为了克服加热过程和磁场之间的冲突，我们开发了基本上不会产生磁场的电加热器。这些加热器很薄，并且足够灵活，可以弯曲到几厘米的半径内。这些精心设计的加热元件和双层结构有效地消除了磁场的产生。加热器最初是为SEOP应用开发的，但也可以应用于需要避免不必要磁场的其他工艺。
Spin polarized 3He gas is currently widely used in various scientific fields and in medical diagnosis applications. The spin polarization of 3He nuclei can be achieved by spin-exchange optical pumping (SEOP). In SEOP, the 3He gas is enclosed in a glass cell together with alkali metals and is then heated to maintain the alkali metal vapor pressures at the appropriate levels. However, polarized 3He gas is highly sensitive to any inhomogeneity in its magnetic field, and any small field gradients caused by the heaters may cause degradation of the 3He polarization. To overcome this conflict between the heating process and the magnetic field, we have developed electrical heaters that essentially cause no magnetic fields. These heaters are thin and are flexible enough to be bent to within a radius of a few centimeters. These carefully designed heater elements and a double layer structure effectively eliminate magnetic field generation. The heaters were originally developed for SEOP applications, but can also be applied to other processes that need to avoid unwanted magnetic fields.
偏振分析中子斩波谱仪，POLANO，J-PARC
DOI：
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发表时间：
2012
期刊：
影响因子：
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作者：
Kenji Ohoyama;et al.
通讯作者：
et al.
p-3He弹性散射自旋相关系数的测量
DOI：
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发表时间：
2021
期刊：
影响因子：
--
作者：
M. Inoue;K. Sekiguchi;K. Miki;A. Watanabe;S. Nakai;D. Sakai;S. Shibuya;H. Umetsu;Y. Utsuki;S. Goto;K. Hatanaka et al.
通讯作者：
K. Hatanaka et al.