Dynamic Nuclear Polarization using Photoexcited Triplet Electron Spins in Eutectic Mixtures

2018 ◽  
Vol 122 (50) ◽  
pp. 9670-9675 ◽  
Author(s):  
Akinori Kagawa ◽  
Makoto Negoro ◽  
Ryohei Ohba ◽  
Naoki Ichijo ◽  
Kota Takamine ◽  
...  
Keyword(s):  
Dynamic Nuclear Polarization ◽  
Nuclear Polarization ◽  
Electron Spins ◽  
Eutectic Mixtures

scholarly journals Dynamic Nuclear Polarization with Single Electron Spins

2008 ◽  
Vol 100 (6) ◽  
Author(s):  
J. R. Petta ◽  
J. M. Taylor ◽  
A. C. Johnson ◽  
A. Yacoby ◽  
M. D. Lukin ◽  
...  
Keyword(s):  
Dynamic Nuclear Polarization ◽  
Nuclear Polarization ◽  
Single Electron ◽  
Electron Spins

scholarly journals Polarized proton spin filter for epithermal neutrons based on dynamic nuclear polarization using photo-excited triplet electron spins

2020 ◽  
Vol 2020 (12) ◽  
Author(s):  
Shusuke Takada ◽  
Kenichiro Tateishi ◽  
Yasuo Wakabayashi ◽  
Yoshimasa Ikeda ◽  
Tamaki Yoshioka ◽  
...  
Keyword(s):  
Dynamic Nuclear Polarization ◽  
Nuclear Polarization ◽  
Proton Spin ◽  
Beam Diameter ◽  
Electron Spins ◽  
Spin Filter ◽  
Neutron Polarization ◽  
Excited Triplet ◽  
Epithermal Neutrons ◽  
Polarized Proton

Abstract 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.

Porphyrins as Versatile, Aggregation-Tolerant, and Biocompatible Polarizing Agents for Triplet Dynamic Nuclear Polarization of Biomolecules

2021 ◽  
pp. 2645-2650
Author(s):  
Tomoyuki Hamachi ◽  
Koki Nishimura ◽  
Hironori Kouno ◽  
Yusuke Kawashima ◽  
Kenichiro Tateishi ◽  
...  
Keyword(s):  
Dynamic Nuclear Polarization ◽  
Nuclear Polarization
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