@article{oai:jaxa.repo.nii.ac.jp:00031854,
 author = {早川, 幸男 and HAYAKAWA, Sachio},
 issue = {3_A},
 journal = {東京大学宇宙航空研究所報告},
 month = {Jul},
 note = {Energetic electrons found in the tail of the magnetosphere are able to excite X-rays on the lunar surface, when they hit the moon. The flux of such electrons with energies of several KeV is observed as high as 10^8cm^<-2>sec^<-1>, and the bremsstrahlung X-rays of energy k in &lrtri;k excited thereby is as strong as 4 X10^3 (&lrtri;k/K) cmcm^<-2>sec^<-1> at the lunar surface. The intensity of K X-rays, for example, of silicon is about 5KeV//&lrtri;k times the bremsstrahlung intensity at the same energy. It is, therefore, suggested that the observation of such lunar X-rays provides information on the electrons in the magnetosphere as well as on the chemical composition of the moon., 資料番号: SA0124911000},
 pages = {940--942},
 title = {地球磁場に伴う電子で励起される月のX線},
 volume = {2},
 year = {1966}
}