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核スピン偏極と中性子小角散乱法を用いたスパー可視化の試み,2

Determination of spur structures using dynamic nuclear polarization and small-angle neutron scattering study, 2

熊田 高之   ; 能田 洋平; 橋本 竹治; 小泉 智

Kumada, Takayuki; Noda, Yohei; Hashimoto, Takeji; Koizumi, Satoshi

われわれは動的核スピン偏極(DNP)法と、中性子小角散乱(SANS)法を組合せ、照射試料中に生じたスパー,ブロブ,ショートトラックの構造決定を行おうとしている。われわれは、DNPとSANS法を組合せ、ポリエチレン試料中に分布するラジカルの空間分布に関する知見を得ることに成功した。本結果はDNPとSANS法がスパー等の構造決定に有用であることを支持する。

We plan to study structures of spur, blob, and shorttrack using dynamic nuclear polarization (DNP) and small-angle neutron scattering (SANS) methods. Recently, we measured SANS profiles of proton-spin polarized polyethylenes. We found clear evidence that polarization of crystalline part of polyethylene in which paramagnetic species of TEMPO were not doped was smaller than that in amorphous part. This result indicates that DNP is useful to make gradient of spin polarization which can be measured by SANS.

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