紀要論文

紀要論文

text

アジア太平洋論叢. 2006, 16, p. 139-157

日本語

text

2006-11-30

論説

North Korea conducted her first nuclear explosion test on Oct.9,2006. It is believed to have been an implosion type using plutonium (Pu). She is reported to have notified China only 20 minutes prior to the test and have mentioned that the intended yield would be about 4kt. According to seismic analyses of the blast, however, the consensus is that the actual yield would have been less than 1kt. Thus, some people have concluded that it was a dud. This paper makes an effort to explain technical and engineering difficulties associated with an implosion type test, let alone the first explosion test. For example, a mistiming of being either too early or too late of only ten millionth of a second can cause a fizzle or pre-detonation without any sustained chain-reaction taking place. Therefore, the mere fact that she had at least succeeded in attaining super criticality indicates that her technical and engineering level may not be low. This paper would like to call attention on this fact and warn that one should not jump to the dud conclusion. The test would be at least a partial success in the sense that it did explode.

100032

北朝鮮の核実験は「失敗」なのか : 爆縮型核実験の技術的困難さ

竹内, 俊隆

アジア太平洋研究会

日本語

2006-11-30

アジア太平洋論叢

16

139

157

https://hdl.handle.net/11094/100032