Publication Date:
2005
Citation:
Ablated Mg films with a graphite cover as photocathodes / A. Perrone, L. Cultrera, A. Pereira, M. Rossi, S. Cialdi, I. Boscolo, F. Tazzioli, C. Vicario, G. Gatti. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - 554:1-3(2005), pp. 220-225. [10.1016/j.nima.2005.08.078]
abstract:
Mg films deposited by pulsed laser ablation on a Cu substrate were tested as photocathodes in a DC diode. They
showed features of robustness and a quantum efficiency of 3 10 4 at low accelerating field when illuminated by
266nm light at normal incidence. A graphite protective layer of about 20nm thickness deposited by laser ablation just
after the Mg deposition made the cathode stable and of easy handling. The cathodes could stay for several weeks in air
before being inserted in the test chamber. The preparation procedure and the tests are presented.
showed features of robustness and a quantum efficiency of 3 10 4 at low accelerating field when illuminated by
266nm light at normal incidence. A graphite protective layer of about 20nm thickness deposited by laser ablation just
after the Mg deposition made the cathode stable and of easy handling. The cathodes could stay for several weeks in air
before being inserted in the test chamber. The preparation procedure and the tests are presented.
IRIS type:
01 - Articolo su periodico
Keywords:
Thin films; Photocathodes; Laser ablation
List of contributors:
A. Perrone, L. Cultrera, A. Pereira, M. Rossi, S. Cialdi, I. Boscolo, F. Tazzioli, C. Vicario, G. Gatti
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