| Numéro |
J. Phys. III France
Volume 2, Numéro 3, March 1992
|
|
|---|---|---|
| Page(s) | 473 - 480 | |
| DOI | https://doi.org/10.1051/jp3:1992142 | |
DOI: 10.1051/jp3:1992142
J. Phys. III France 2 (1992) 473-480
1 Dipartimento di Fisica dell' Universita' and INFN, I-44100 Ferrara, Italy
2 Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
3 Dipartimento di Fisica dell' Universita' and INFN, I-70120 Bari, Italy
© Les Editions de Physique 1992
J. Phys. III France 2 (1992) 473-480
Experimental study on lifetimes and current production from a GaAs electron source
R. Calabrese1, V. Guidi1, 2, G. Lamanna3 and L. Tecchio21 Dipartimento di Fisica dell' Universita' and INFN, I-44100 Ferrara, Italy
2 Laboratori Nazionali di Legnaro, I-35020 Legnaro, Italy
3 Dipartimento di Fisica dell' Universita' and INFN, I-70120 Bari, Italy
(Received 5 July 1991, revised and accepted 8 November 1991)
Abstract
A very low pressure activation which allows an improved current emission has been carried out on a GaAs NEA activated photocathode.
The experiments show that, under a pressure threshold, several hundreds of
A current are delivered continuously for some days.
© Les Editions de Physique 1992