@article{oai:yamanashi.repo.nii.ac.jp:00000887,
 author = {小玉, 正弘 and 小倉, 紘一},
 journal = {山梨医科大学紀要, Bulletin of Yamanashi Medical University},
 month = {},
 note = {The spatial diffusion of auroral X-rays through the atmosphere has been examined by means of a Monte Carlo calculation so as to serve for transformation of auroral X-ray images at balloon altitudes into those at the top of stmosphere. Simulation analysis is made on four different modes of photon source functions: mono-energy parallel beam, mono-energy isotropic, exponential type and power-law type spectra. The results show that the out of focusing of X-ray images is enhanced with increasing energy and zenith angle of an initial photon but is not so varied against atmospheric depth and source function. Also the radial distance of horizontal diffusion range due to multiple scatterings of photon is remained within l0 km in the FWHM at a depth of 10 g/c㎡.},
 pages = {57--67},
 title = {モンテカルロ法によるオーロラX線の大気中における拡散シミュレーション},
 volume = {2},
 year = {1985}
}