7th Workshop on Nuclear Fission and Spectroscopy of Neutron-Rich Nuclei

Session

session 14 (Chair: S. Siem)

session_14

12 Mar 2026, 18:05

Salle Totem, Le Bachat, Chamrousse, France

88. Approaching the dominance of electron-capture delayed fission in 234Bk and 230Am

Andrei Andreyev (University of York, UK)

12/03/2026, 18:05

The first identification of the exotic decay process of Electron-Capture Delayed Fission (ECDF) of the very neutron-deficient isotope 234$Bk was performed, and improved ECDF properties for its alpha-decay product 230Am were obtained at the gas-filled recoil separator SHANS2. The isotope 234Bk was produced in the fusion-evaporation reaction 40Ar+197Au->237Bk*->234Bk+3n.
By using the method of...

10. Delayed gamma-ray spectroscopy as a tool for fusion-fission studies

Piotr Garczynski (Faculty of Physics, Uniwersity of Warsaw)

12/03/2026, 18:30

Fusion-fission reactions provide valuable insights into nuclear structure and fission dynamics. They are studied with various techniques, including direct mass and charge measurements and gamma-ray spectroscopy. Prompt gamma-ray emission is commonly used, requiring sophisticated detector arrays and coincidence analysis. We present a complementary spectroscopic method based on medium- and...

17. Total gamma-ray energy in 252Cf spontaneous fission

Valentin Piau (Subatech)

12/03/2026, 18:45

Prompt fission gamma-ray emission is a complex phenomenon at the interplay of nuclear reaction and nuclear structure, that depends on the highly excited fission fragment entry state, subsequent neutron emission, and the nuclear structure of the resulting fragment. In the last few years there has been a renewed interest about this observable, as it is a sensitive probe to study the nuclear...

39. Direct Measurement of Independent Isotopic Fission Yields of 252Cf by Mass Spectrometry

H. Wilsenach (HUJI)

Independent isotopic fission yields (IIFYs) are needed for nuclear physics, nuclear astrophysics and nuclear power applications. The measurement of IIFYs is very challenging, as the low kinetic energies of the fission fragments make the identification of heavy products extremely difficult. Consequently, broadband IIFY data remain limited.

We have developed a complementary method for...

70. Independent Fission Product Yields with 2E-2V Spectrometers

Jack Winkelbauer

The study of the mass distribution resulting from nuclear fission has seen considerable effort over the past few decades, both theoretically and experimentally. Fission product yields are a critical ingredient for simulations of fission applications and the experimental efforts underpinning the nuclear data represent significant technical challenges. There are multiple efforts to constrain...