Author/Authors :
Yoshida، نويسنده , , M. and Hasegawa، نويسنده , , J. and Fukata، نويسنده , , S. and Oguri، نويسنده , , Y. and Ogawa، نويسنده , , M. and Nakajima، نويسنده , , M. and Horioka، نويسنده , , K. and Maebara، نويسنده , , S. and Shiho، نويسنده , , M.، نويسنده ,
Abstract :
We have measured a time-resolved emittance of a laser ion source by a pepper-pot method using a commercially available digital camera for personal use and a micro channel plate detector. The micro channel plate was operated in pulse mode by applying a short pulse of high voltage to the detector. This enabled us to obtain the time-resolved images of the pepper-pot. The ion source is based on irradiation of a frequency-doubled Nd : YAG laser on a copper target. The copper ion beam was extracted from the laser plasma by an induction accelerator module during 400 ns. The emittance was observed as a function of time between 180 and 380 ns after the extraction voltage was applied.
