24–29 Jun 2018
LNGS
Europe/Rome timezone

Cross sections of 7Be+d measured at low energies and implications for Big-Bang nucleosynthesis

25 Jun 2018, 15:00
15m
"E. Fermi" conference room (LNGS)

"E. Fermi" conference room

LNGS

Via G. Acitelli, 22 - 67100 Assergi (Italy)

Speaker

Ingo Wiedenhoever (Florida State University)

Description

The cross sections of nuclear reactions between the radioactive isotope 7Be and deuterium, a possible path of reducing the production of mass-7 nuclides in Big-Bang nucleosynthesis, were measured at center-of-mass energies between 0.2 MeV and 1.5 MeV. The experiment was performed with the ANASEN active-target detector system at the RESOLUT facility of Florida State University. We measured cross sections consistent with prior measurements at higher energies but significantly higher yields at lower energy and inside the Gamow window. The implications for the primordial lithium problem will be discussed.

Primary author

Ingo Wiedenhoever (Florida State University)

Co-authors

Grigory Rogachev (Texas A&M University) Jeffrey Blackmon (Louisiana State University) Lagy T. Baby (Florida State University) Maria Anastasiou (Florida State University) Nabin Rijal (Florida State University) Peter Hoeflich (Florida State University) Yevgen Koshchiy (Texas A&M University)

Presentation materials