Rapidly pulsed helium droplet source

Dominik Pentlehner*, Ricarda Riechers, Bernhard Dick, Alkwin Slenczka, Uzi Even, Nachum Lavie, Raviv Brown, Kfir Luria

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

77 Scopus citations

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 104 and 106 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.

Original languageEnglish
Article number043302
JournalReview of Scientific Instruments
Volume80
Issue number4
DOIs
StatePublished - 2009

Funding

FundersFunder number
German Israeli Fund
Israeli Science Fund
Deutsche Forschungsgemeinschaft

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