A UV LED-based fast-pulsed photoelectron source for time-of-flight studies

0330898 - ÚJF 2010 RIV DE eng J - Článek v odborném periodiku
Valerius, K. - Beck, M. - Arlinghaus, H. - Bonn, J. - Hannen, V.M. - Hein, H. - Ostrick, B. - Streubel, S. - Weinheimer, C. - Zbořil, Miroslav
A UV LED-based fast-pulsed photoelectron source for time-of-flight studies.
New Journal of Physics. Roč. 11, - (2009), 063018/1-063018/16. ISSN 1367-2630. E-ISSN 1367-2630
Grant CEP: GA MŠMT LA318
Výzkumný záměr: CEZ:AV0Z10480505
Klíčová slova: fast-pulsed * high-resolution * time-of-flight
Kód oboru RIV: BG - Jaderná, atomová a mol. fyzika, urychlovače
Impakt faktor: 3.312, rok: 2009

We report on spectroscopy and time-of-flight measurements using an 18 keV fast-pulsed photoelectron source of adjustable intensity, ranging from single photoelectrons per pulse to 5 photoelectrons per mu s at pulse repetition rates of up to 10 kHz. Short pulses between 40 ns and 4 mu s in length were produced by switching light emitting diodes with central output wavelengths of 265 and 257 nm, in the deep ultraviolet (or UV-C) regime, at kHz frequencies. Such photoelectron sources can be useful calibration devices for testing the properties of high-resolution electrostatic spectrometers, like the ones used in current neutrino mass searches.
Trvalý link: http://hdl.handle.net/11104/0176574