Title :
Brightness measurements of electron beam photoemitted multicrystalline I/sub a/B/sub 6/
Author :
Shi Jiangjun ; Qian Minquan ; Tao Zucong ; Yang Maorong ; Hu Kesong ; Liu Xisan ; Cheng Jianbo ; Ran Qijun ; Liu Zulun ; Qinhui, S.
Author_Institution :
Southwest Institute of Fluid Physics
Abstract :
Summary form only given, as follows. Lanthanum hexaboride has been tested as a photoemitter when irradiated by a KrF eximer laser. Measured current, from 0.4cm/sup 2/ emitting area, was 10 A at irradiating wavelength of 248 nm; current density was about 25 A/cm/sup 2/. Beam normalized rms emittance measured with pepper pot method was 20 mm-mrad. The corresponding normalized rms brightness was about 2.5 X 10/sup 10/ A/cm/sup 2/-rad/sup 2/. The quantum efficiency was about 1.0 X 10/sup -4/ . The chamber pressure radius was better than 2 X 10/sup -6/ torr. Further research is underway.
Keywords :
Brightness; Circuits; Electron beams; Frequency; Impedance; Linear accelerators; Particle beams; Time measurement; Wavelength measurement;
Conference_Titel :
Plasma Science,1992. IEEE Conference Record - Abstracts., 1992 IEEE International Conference on
Conference_Location :
Tampa, FL, USA
Print_ISBN :
0-7803-0716-X
DOI :
10.1109/PLASMA.1992.697777
