Neutron Production Characteristics and Emission Properties of Spherically Convergent Beam Fusion
Neutron Production Characteristics and Emission Properties of Spherically Convergent Beam Fusion
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球状会聚束聚变的中子产生特性和发射特性
DOI：
10.13182/fst01-a171
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
E. Hotta
中科院分区：
文献类型：
--
作者：
K. Yamauchi;Kazuki Ogasawara;Masato Watanabe;A. Okino;Y. Sunaga;E. Hotta
给出了便携式中子源球面辉光放电的实验结果。实验装置由直径45 cm、高31 cm的不锈钢圆柱室组成，其中安装了球状网状30 cm直径的阳极。用1.2 mm直径的不锈钢丝制作的球栅阴极制成7 cm直径的开放球栅。该系统通过供氢或氢气维持在1至15mTorr的恒定压力。用光谱方法测量了该器件的可见光和紫外光发射。观察到了强的氢发射谱线，并且所有的氢发射谱线都被多普勒和/或斯塔克效应显著地加宽了。根据这些数据，估算了束流离子速度、电子密度和堆芯等离子体温度。在40千伏，2 mA的放电条件下，获得了稳态中子产生率为10~4 S−1。在几毫安的小电流范围内，中子产生率与放电电流与功率之比在~1.1~1.4之间成正比。在测量的电压和电流范围内，束流背景反应占主导地位。
Abstract Experimental results of spherical glow discharge for a portable neutron source are presented. An experimental device consisting of a 45-cm-diam, 31-cm-high stainless steel cylindrical chamber was constructed in which a spherical mesh-type 30-cm-diam anode was installed. A spherical grid cathode made of 1.2-mm-diam stainless steel wire was made into a 7-cm-diam open spherical grid. The system was maintained at a constant pressure of 1 to 15 mTorr by feeding hydrogen or deuterium gas. The visible and ultraviolet emissions from the device were measured using the spectroscopic method. Strong emission lines of hydrogen were observed, and all hydrogen lines were broadened, remarkably, by Doppler and/or Stark effects. From these data, beam ion velocity, electron density and temperature of the core plasma were estimated. Using deuterium gas, a steady-state neutron production rate of 104 s−1 was observed at a discharge of 40 kV, 2 mA. In the low-current region of several milliamperes, the neutron production rate was proportional to the discharge current to the power from ~1.1 to 1.4. The beam-background reactions were dominant in the measured range of voltage and current.