Polarized proton spin filter for epithermal neutrons based on dynamic nuclear polarization using photo-excited triplet electron spins
Polarized proton spin filter for epithermal neutrons based on dynamic nuclear polarization using photo-excited triplet electron spins
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基于使用光激发三重态电子自旋的动态核极化的超热中子偏振质子自旋过滤器
DOI：
10.1093/ptep/ptaa111
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发表时间：
2020
影响因子：
3.5
通讯作者：
T. Uesaka
中科院分区：
文献类型：
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作者：
S. Takada;K. Tateishi;Y. Wakabayashi;Y. Ikeda;T. Yoshioka;Y. Otake;T. Uesaka
为了滤除能量超过0.1eV的中子，我们利用光激发三重态电子自旋，发展了一种基于动态核极化的新型极化质子自旋过滤器。自旋过滤器由掺有氘代并五苯的萘单晶组成，其尺寸为15 × 4，{\rm mm}^3$，使其能够覆盖宽的光束直径。在0.35T和90 K下运行。我们成功地极化中子的能量范围在0.1-10 eV使用RIKEN加速器驱动的紧凑型中子源。质子极化和中子极化的平均值分别为0.250pm ~ 0.050 $和0.076pm ~ 0.015 $。
To polarize neutrons with energy beyond 0.1 eV, we developed a novel polarized proton spin filter based on dynamic nuclear polarization using photo-excited triplet electron spins. The spin filter consists of a single crystal of naphthalene doped with deuterated pentacene and has a size of $\varnothing15\times4 \, {\rm mm}^3$, allowing it to cover a wide beam diameter. It was operated in 0.35 T and at 90 K. We succeeded in polarizing neutrons in the energy range 0.1–10 eV using a RIKEN accelerator-driven compact neutron source. The averaged values of the proton and neutron polarization were $0.250\pm0.050$ and $0.076\pm0.015$, respectively.
使用光激发三重态电子在多孔介质中进行动态核极化
DOI：
--
发表时间：
2022
期刊：
影响因子：
--
作者：
SINGH BALJEET;Tomoyuki Hamachi;Naoto Matsumoto;Reiya Yabuki;Nobuhiro Yanai
通讯作者：
Nobuhiro Yanai