@techreport{oai:jaxa.repo.nii.ac.jp:00002098, author = {本村, 大成 and 田中, 謙次 and 村上, 勝彦 and 篠原, 俊二郎 and 谷川, 隆夫 and 船木, 一幸 and Motomura, Taisei and Tanaka, Kenji and Murakami, Katsuhiko and Shinohara, Shunjiro and Tanikawa, Takao and Funaki, Ikko}, month = {Feb}, note = {2007年12月19日および2008年12月16日開催の研究会における講演より10編の査読論文を収録, Space Plasma Symposium FY2007 and FY2008, A low aspect ratio, high-density helicon plasma has been produced using a flat spiral antenna in the Large Helicon Plasma Device (LHPD) at Institute of Space and Astronautical Science / Japan Aerospace Exploration Agency (ISAS / JAXA). The experimental method employed and some examples of the experimental results are presented. We describe in detail the behavior of the electron density as a function of the radio frequency (rf) input power. In particular, we focus on the behavior of the threshold power, which strongly depends on the magnetic field strength near the antenna, for the discharge mode transition from Inductively Coupled Plasma (ICP) to Helicon Wave Plasma (HWP). The spatial profiles of the rf wave structures for ICP and HWP are also presented in detail., 形態: カラー図版あり, Physical characteristics: Original contains color illustrations, 資料番号: AA0064669007, レポート番号: JAXA-RR-09-003}, title = {Development of a Low Aspect Ratio, Helicon Plasma Source using a Flat Spiral Antenna}, year = {2010} }