Optimization of laser parameters for polarizing protons in naphthalene crystals

被引：14

作者：

Wakui, T

Hatano, M

Sakai, H

Uesaka, T

Tamii, A

机构：

[1] RIKEN, Wako, Saitama 3510198, Japan

[2] Univ Tokyo, Ctr Nucl Studies, Tokyo 1130033, Japan

[3] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

[4] Osaka Univ, Res Ctr Nucl Study, Ibaraki, Osaka 5670047, Japan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2004年 / 526卷 / 1-2期

关键词：

polarized target; aromatic molecule; relaxation;

D O I：

10.1016/j.nima.2004.03.172

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Protons in a crystal of naphthalene doped with pentacene have been polarized to 37% in a magnetic field of 0.3 T and at a temperature of 100 K. In order to improve the proton polarization further, a study to find an optimal condition for polarizing protons has been carried out by using a proton polarizing system with a cylindrical microwave cavity. As a part of the study, the dependencies of the polarization rate at an early stage of the build-up and of the relaxation rate during laser irradiation on the operation current of the laser have been measured. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：182 / 185

页数：4

共 5 条

[1] HIGH DYNAMIC NUCLEAR-POLARIZATION AT ROOM-TEMPERATURE [J].