Blast Wave Generation by the Bombardment of TEA CO2 Laser at Low Pressures

元データ 社団法人 日本分光学会


A TEA CO<SUB>2</SUB> laser beam (500 mj, 100 ns) has been focused on metal samples under various pressures of surrounding gas. A luminous plasma with a hemispherical shape of about 3 cm radius is produced at the pressure of 1 Torr, while the gas breakdown takes place predominantly at pressures of above 10 Torr. The plasma has thin shell structure. The displacement of the front of the shell is proportional to the two-fifths power of time. The luminous plasma is found to be excited by the blast wave produced by the atoms gushed from the sample.


香川 喜一郎 福井大学教育地域科学部
上田 正紘 福井大学教育地域科学部
茨田 隆徳 福井大学教育学部
李 兆智 中国船舶工業総公司第12研究所
香川 喜一郎 福井大学教育学部
上田 正紘 福井大学教育学部