Jun Muto   Hiroyuki Nagahama   Takashi Miura   Ichiro Arakawa   
PHYSICS OF THE EARTH AND PLANETARY INTERIORS 168(1-2) 1-5 2008年5月 [査読有り]
Although several mechanisms of precursory electromagnetic emissions of earthquakes have been proposed, there has been no in situ observation of electromagnetic phenomena occurring at the frictional contacts during rock frictions. From an experimen...
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION 14(3) 560-565 2007年6月 [査読有り]
Gas breakdown caused by triboelectricity during friction between two insulators was observed in measuring two-dimensional spatial distributions of luminescence from gas discharge plasma. The insulators were chosen among diamond, quartz, sapphire, ...
Jun Muto   Hiroyuki Nagahama   Takashi Miura   Ichiro Arakawa   
TECTONOPHYSICS 431(1-4) 113-122 2007年2月 [査読有り]
To investigate the relation between the rock friction and the fractal electromagnetic radiation before the main-shock of earthquakes, we conducted a friction experiment simulating the motion of an asperity on a fault plane, and observed photon emi...
T. Tachibana   T. Miura   I. Arakawa   
LOW TEMPERATURE PHYSICS 32(11) 1092-1096 2006年11月 [査読有り]
Electron or photon irradiation of H2O adsorbed on the surface of rare gas solids induces the desorption of protonated water clusters, (H2O)(n)H+. The yield and the size n distribution of cluster ions depend on the coverage, the deposition temperat...
低温表面上に物理吸着した水素の密度を測定するために、電子励起脱離(ESD)法を用いた。脱離したイオンを飛行時間測定法(TOF : time of flight)を用いて質量分析し、H+の収量から水素の吸着密度を決定し、その吸着等温線を求める。本研究では、広い温度範囲での吸着等温線を求めることを目的とする。また、吸着平衡に近づく過渡状態の観測から物理吸着する水素の平均滞在時間を測定する。
<p>Surface science had its beginning at the dawn of the human civilization and vacuum science in the 17th century. Collaboration between them has begun in the late 19th century and has grown in close manner in the field of sc...