Eur. Phys. J. Appl. Phys.
Volume 71, Number 3, September 2015
|Number of page(s)||9|
|Published online||14 August 2015|
Slowing dynamics of a supersonic beam, simulation and experiments
Laboratoire de Physique des Lasers, Universite Paris 13, av. J.B. Clément, 93430 Villetaneuse, France
2 Institute Mines-Telecom, Telecom Sud-Paris, Department Electronics and Physics, 9 rue Charles Fourier, 91011 Evry Cedex, France
3 PAP, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371 Singapore
a e-mail: email@example.com
Revised: 8 July 2015
Accepted: 9 July 2015
Published online: 14 August 2015
In this paper we present numerical and experimental methods aimed to study the evolution in space and time of a slowed supersonic beam. These generic methods are applicable to a variety of beams and decelerating techniques. The present implemented experimental set up is based upon Zeeman slowing of a metastable atom beam. The detection uses a channel-electron multiplier and a delay-line detector allowing time-of-flight analysis and numerical image reconstruction. In particular a depopulation effect at the centre of the beam is evidenced. In view of quantifying the slowing process, Monte Carlo calculations based on rate-equations are detailed.
© EDP Sciences, 2015
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