[1N08-10] Fission reaction

[1N09] Fission fragment mass distributions of Np, Pu and Am isotopes utilizing multi-nucleon transfer reactions

*Mark James Vermeulen¹, Katsuhisa Nishio¹, Kentaro Hirose¹, Hiroyuki Makii¹, Riccardo Orlandi¹, Kazuaki Tsukada¹, Satoshi Chiba², Andrei Andreyev³ (1.JAEA, 2.TIT, 3.Univ. York)

Keywords:Nuclear fission, multi-nucleon transfer reaction, fission fragment mass distribution, Neptunium, Plutonium, Americium

Fission fragment mass distributions (FFMDs) of ^237,238,239Np, ^238,239,240Pu and ^241,242,243Am nuclei, and their dependence on excitation energy up to 70 MeV, have been measured at the JAEA-Tokai Tandem Accelerator Facility, employing multi-nucleon transfer reactions using an ¹⁸O beam and ²³⁷Np target.

Ejectile nuclei were identified with silicon ΔE-E detectors, enabling determination of compound nuclei. Multi-wire proportional counters enabled identification of fission events.