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脳転移に放射線療法を行った非小細胞肺癌23症例80病巣について腫瘍の縮小・消失の経過を解析した.照射方法でみると少分割法 (TDF80-90) では通常分割法 (TDF60-106) によるよりも早期に腫瘍の縮小がみられた.腫瘍は容積が小さいものほど縮小が顕著で, 103mm3以下のものでは照射開始12週間後に14/16 (87%) が完全に消失し, この著効例はすべて通常照射を行ったものであった.

Hydrogenated amorphous carbon films with a high content of sp3 bonds were prepared by a glow-discharge-decomposition of CH4 and H2 mixture. With exposure to light at 77 K, the films exhibit a new ESR signal with g=2.011 and a half width of 23 G in addition to an enhancement of the signal at g=2.003 due to C dangling bonds. The new signal is attributable to trapped holes in the valence-band-tail-state, and its density decreases with increasing hydrogen content in the film.

Hydrogenated amorphous carbon films with high contents of sp3 bonds have been prepared by a glow-discharge-decomposition of CH4 and H2 mixture. The film thickness and the optical gap of the films were gradually reduce up to annealing at 350°C by the densification of the film; they rapidly reduce above 350°C. The hydrogen density in the films, however, was almost constant. From the variation of mass spectra with annealing, the decomposition of the films was found to begin at 350°C, accompanied by a volatilization of various forms of hydrocarbon such as CH n , C2H n and C3H n .