TY - GEN
T1 - Secondary-electron emission from hydrogenterminated diamond
AU - Wang, Erdong
AU - Ben-Zvi, Ilan
AU - Rao, Triveni
AU - Wu, Qiong
AU - Dimitrov, D. A.
AU - Xin, Tianmu
PY - 2012
Y1 - 2012
N2 - Diamond amplifiers demonstrably are an electron source with the potential to support high-brightness, highaverage- current emission into a vacuum. We recently developed a reliable hydrogenation procedure for the diamond amplifier. The systematic study of hydrogenation resulted in the reproducible fabrication of high gain diamond amplifier. Furthermore, we measured the emission probability of diamond amplifier as a function of the external field and modelled the process with resulting changes in the vacuum level due to the Schottky effect. We demonstrated that the decrease in the secondary electrons' average emission gain was a function of the pulse width and related this to the trapping of electrons by the effective NEA surface. The findings from the model agree well with our experimental measurements. As an application of the model, the energy spread of secondary electrons inside the diamond was estimated from the measured emission.
AB - Diamond amplifiers demonstrably are an electron source with the potential to support high-brightness, highaverage- current emission into a vacuum. We recently developed a reliable hydrogenation procedure for the diamond amplifier. The systematic study of hydrogenation resulted in the reproducible fabrication of high gain diamond amplifier. Furthermore, we measured the emission probability of diamond amplifier as a function of the external field and modelled the process with resulting changes in the vacuum level due to the Schottky effect. We demonstrated that the decrease in the secondary electrons' average emission gain was a function of the pulse width and related this to the trapping of electrons by the effective NEA surface. The findings from the model agree well with our experimental measurements. As an application of the model, the energy spread of secondary electrons inside the diamond was estimated from the measured emission.
UR - https://www.scopus.com/pages/publications/84885626109
M3 - Conference contribution
SN - 9783954501151
T3 - IPAC 2012 - International Particle Accelerator Conference 2012
SP - 3223
EP - 3227
BT - IPAC 2012 - International Particle Accelerator Conference 2012
T2 - 3rd International Particle Accelerator Conference 2012, IPAC 2012
Y2 - 20 May 2012 through 25 May 2012
ER -