Okayama University
Kyoto Institute of Technology
Institute of Space and Astronautical Science, Japan Aerospace Exploration Agency (JAXA)(ISAS)
出版者
宇宙航空研究開発機構(JAXA)
出版者（英）
Japan Aerospace Exploration Agency (JAXA)
雑誌名
宇宙航空研究開発機構研究開発報告
雑誌名(英)
JAXA Research and Development Report: Results on International Collaboration of Complex Plasmas in Microgravity and on Earth by Use of PK-3 Plus Facility
巻
JAXA-RR-14-012E
ページ
13 - 22
発行年
2015-03-16
抄録（英）
The fine particle (dusty) plasma is a charge-neutral mixture of micron-sized fine (dust) particles and ambient plasma composed of ions and electrons. Typical densities of fine particles and ambient plasma are (10(exp 4) ～ 10(exp 5)) cm(exp -3) and (10(exp 6) ～ 10(exp 8)) cm(exp -3), respectively. Images of fine particles are easily captured and identified by CCD cameras through the scattering of the laser beam and we are able to make particle level observations. In contrast to singly charged ions or electrons, fine particles in plasmas have large negative charges up to 10(exp 3) or even 10(exp 4) times as large as that of an electron, enabling observations of various effects coming from the strong Coulomb coupling between fine particles. For this reason, a lot of researches on fine particle plasmas have been performed recently. One of the most Interesting phenomena in strongly coupled systems may be the ones related to the critical point. In this report, we give a summary of our proposal to observe critical phenomena in fine particle plasmas in PK-3PLUS under the condition of the microgravity and the present status of data analysis. In PartⅠ, the theoretical background is given and the possibility to observe the critical point is shown with an emphasis on the differences between the simple one-component plasma (OCP) model of the charged particle systems and systems with the background as real physical entity. In Part II, characteristic parameters realized in PK-3 PLUS are analyzed in relation to those of the critical point. The behavior of the structure factor is discussed in comparison with the effects of inhomogeneity and finiteness of observed samples and conclusions are given.
内容記述
形態: カラー図版あり
内容記述（英）
Physical characteristics: Original contains color illustrations
Search for Manifestation of Strong Coupling as Critical Point of Fine Particle Plasmas in PK-3 PLUS
AA1530015003.pdf
(10.91MB)
