| Literature DB >> 19405651 |
Dominik Pentlehner1, Ricarda Riechers, Bernhard Dick, Alkwin Slenczka, Uzi Even, Nachum Lavie, Raviv Brown, Kfir Luria.
Abstract
A pulsed valve connected to a closed-cycle cryostat was optimized for producing helium droplets. The pulsed droplet beam appeared with a bimodal size distribution. The leading part of the pulse consists of droplets suitable for doping with molecules. The average size of this part can be varied between 10(4) and 10(6) helium atoms, and the width of the distribution is smaller as compared to a continuous-flow droplet source. The system has been tested in a single pulse mode and at repetition rates of up to 500 Hz with almost constant intensity. The droplet density was found to be increased by more than an order of magnitude as compared to a continuous-flow droplet source.Entities:
Year: 2009 PMID： 19405651 DOI： 10.1063/1.3117196
Source DB: PubMed Journal: Rev Sci Instrum ISSN： 0034-6748 Impact factor: 1.523