Title:
光電陰極及び電子管
Document Type and Number:
Japanese Patent JP4562844
Kind Code:
B2
Abstract:
In the polycrystal diamond thin film in accordance with the present invention, the average particle size is at least 1.5 mu m and, in a Raman spectrum obtained by Raman spectroscopy, a peak intensity near a wave number of 1580 cm<-1> has a ratio of 0.2 or less with respect to a peak intensity near a wave number of 1335 cm<-1>. The photocathode 2 and electron tube 1 in accordance with the present invention comprise the polycrystal diamond thin film as a light-absorbing layer 22.
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Inventors:
Minoru Arakaki
Shoichi Uchiyama
Hirofumi Suga
Shoichi Uchiyama
Hirofumi Suga
Application Number:
JP2000046248A
Publication Date:
October 13, 2010
Filing Date:
February 23, 2000
Export Citation:
Assignee:
Hamamatsu Photonics Co., Ltd.
International Classes:
C30B29/04; H01J1/34; C23C16/27; H01J40/06; H01J43/08
Domestic Patent References:
| JP9071498A | ||||
| JP10149761A | ||||
| JP9067195A | ||||
| JP2000149767A |
Other References:
A. LAIKHTMAN et al.,Surface quality and composition dependence of absolute quantum photoyield of CVD diamond films,Diamond and Related Materials,March 1999, Vol.8,pp.725-731
Attorney, Agent or Firm:
Yoshiki Hasegawa
Tatsuya Shioda
Shiro Terasaki
Mamoru Suzuki
Tatsuya Shioda
Shiro Terasaki
Mamoru Suzuki