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The Basic Study for Atomic Hydrogen Gas

原子氢气的基础研究

基本信息

批准号：
61400004
负责人：
HORIKAWA Naoaki
金额：
$ 16.38万
依托单位：
Nagoya University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (A)
财政年份：
1986
资助国家：
日本
起止时间：
1986 至 1988
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-61400004/
关键词：
Atomic Hydrogen Gas Dilution Cryostat polarization Dissociation of Hydrogen Molecule Recombination of Atomic Hydrogen 水素原子再結合強磁場

项目摘要

This project aims at the production of the spin polarized atomic gydrogen gas and study the physical characteristics of the gas. To perform this research work, one must construct (I) the high magnetic field by a superconductive magnet, (2) low temperature by a dilution cryostat, (3) dissociation of hydrogen gas to atoms, (4) condensation of gas in a chamber (5) detection of the gas density, polarization etc. and (6) the ejection of stored gas by microwave.Now, we have completed the high magnetic field by superconductive magnet. The magnetic field was excited up to 6.4 Tesla, and driven by constant current mode. The liq. ^4He consumption rate was 0.59, lh and 0.89. /h at constant and normal current modes, respectively. The dilution cryostat has been built at the workshop of our institute. The test by helium-3 mode showed fairly good performance, but it has been made clear that some improvements were necessary by the dilution mode operation. The improvement has been almost finished. The dissociation of hydrogen gas by RF oscillator was observed at room temperature. The chamber for the atomic hydrogen gas is made and the bolometer is installed in it. We are now testing the detection of the atomic hydrogen gas in a small superconducting magnet set in a glass dewar.In order to complete this project, the following studies should be performed further.(1) The cooling of the gas at several lomx by the dilution mode cryostat.(2) The establishment of the gas detection method for the atomic hydrogen.(3) The measurements of the gas density and polarization.(4) The test of the ejection of the polarized atomic hydrogen gas.

本项目旨在制备自旋极化氢原子气体并研究其物理特性。为了进行这项研究工作，必须构建（I）通过超导磁体的高磁场，（2）通过稀释低温恒温器的低温，（3）氢气解离为原子，（4）室中气体的冷凝（5）检测气体密度、极化等（6）通过微波喷射储存气体。现在，我们已经完成了高磁场的永磁体。磁场被激发到6.4特斯拉，并通过恒流模式驱动。液体。^4He消耗率分别为0.59、1h和0.89。/h，分别在恒定和正常电流模式下。稀释式恒温器已在我所车间建成。氦-3模式下的试验显示出相当好的性能，但已清楚地表明，稀释模式操作需要进行一些改进。改进工作已基本完成。在室温下观察到了射频振荡器对氢气的解离。我们制作了氢气原子室，并在其中安装了测辐射热计，目前正在测试在玻璃杜瓦中放置的小型超导磁体中对氢气原子的探测。为了完成这个项目，还需要进一步开展以下研究。(1)用稀释式低温恒温器对气体进行几倍的冷却。(2)原子氢气体检测方法的建立。(3)气体密度和极化的测量。(4)极化氢原子气体喷射的试验。