Capture cross sections on unstable nuclei

Conference Paper

Accurate neutron-capture cross sections on unstable nuclei near the line of beta stability are crucial for understanding the s-process nucleosynthesis. However, neutron-capture cross sections for short-lived radionuclides are difficult to measure due to the fact that the measurements require both highly radioactive samples and intense neutron sources. Essential ingredients for describing the γ decays following neutron capture are the γ-ray strength function and level densities. We will compare different indirect approaches for obtaining the most relevant observables that can constrain Hauser-Feshbach statistical-model calculations of capture cross sections. Specifically, we will consider photon scattering using monoenergetic and 100% linearly polarized photon beams. Challenges that exist on the path to obtaining neutron-capture cross sections for reactions on isotopes near and far from stability will be discussed.

Full Text

Duke Authors

Cited Authors

  • Tonchev, AP; Escher, JE; Scielzo, N; Bedrossian, P; Ilieva, RS; Humby, P; Cooper, N; Goddard, PM; Werner, V; Tornow, W; Rusev, G; Kelley, JH; Pietralla, N; Scheck, M; Savran, D; Löher, B; Yates, SW; Crider, BP; Peters, EE; Tsoneva, N; Goriely, S

Published Date

  • September 13, 2017

Published In

Volume / Issue

  • 146 /

Electronic International Standard Serial Number (EISSN)

  • 2100-014X

International Standard Serial Number (ISSN)

  • 2101-6275

International Standard Book Number 13 (ISBN-13)

  • 9782759890200

Digital Object Identifier (DOI)

  • 10.1051/epjconf/201714601013

Citation Source

  • Scopus