Experiments were performed using a pulsed KrF excimer laser. Using surface heating and laser cleaning (surface activation), the quantum efficiency was dramatically enhanced. The quantum efficiency of LaB6 was 6.1 x 10-4. Using the pepper-pot method, the nomalized beam emittances for these materials were found to be about 10π mm mrad and the corresponding normalized brightnesses were about 1010A/m2 rad2.

Photoemission Studies on LaB6 and Pure Metals using a Nanosecond KrF Excimer Laser. Qian, M.Q., Yang, M.R., Pan, Q., Hu, K.S., Deng, R.P., Shi, J.J., Tao, Z.C., Cheng, J.B., Ran, Q.J., Lin, Z.I.: Nuclear Instruments and Methods in Physics Research A, 1995, 358[1-3], 280-83