Accumulated laser-photoneutron generation

Itamar Cohen, Tamir Cohen, Aviv Levinson, Michael Elkind, Yonatan Rakovsky, Assaf Levanon, David Michaeli, Erez Cohen, Arie Beck, Ishay Pomerantz*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

We present repeated generation of photoneutrons by double-pulse irradiation of ultrathin foils. A ~ mJ prepulse turns a foil into a 100-μm scale plasma plume from which a beam of MeV electrons is generated by the main pulse. Neutrons are generated in a secondary metal target placed downstream to the electron beam. We utilize an automated target system capable of delivering ultrathin foils to the laser focus at an average rate of 0.1 Hz. With 153 consecutive laser shots taken over the course of 24 min, we generated a total 2.6 × 107 neutrons. We present a method for evaluating how the number of photoneutrons scales with the laser intensity in this experimental scenario, which we validate against the measured yields.

Original languageEnglish
Article number585
JournalEuropean Physical Journal Plus
Volume139
Issue number7
DOIs
StatePublished - Jul 2024

Funding

FundersFunder number
Ministry of Science and Technology, Israel
Tel Aviv University
PAZY Foundation435/2023
Ministry of Energy, Israel220-11-054

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