Measurements of cross sections for production of light nuclides by 120 GeV proton bombardment of Ni and Au
Abstract
Production cross sections for long-lived cosmogenic nuclides, such as Be-10 and Al-26 have a very practical benefit for health and safety in radiation protection; they serve as a comprehensive nuclear database that can be used to estimate residual radioactivities in accelerator facilities. Cross sections are also indispensable for studying the specific formation mechanisms of these nuclides, where spallation, fission, or fragmentation is a dominant process. The fragmentation process is usually studied by production cross sections of light nuclides which are best measured by AMS. For energies above 100 MeV few measurements have been made and published. We have measured and report the first Be-10 and Al-26 production cross sections from Ni and Au produced by 120 GeV protons. The proton irradiation at 120 GeV was performed at Fermi National Accelerator Laboratory. The AMS measurements were performed at MALT, University of Tokyo. We will discuss the production mechanism of Be-10 and Al-26 by spallation and fragmentation.
- Publication:
-
APS Division of Nuclear Physics Meeting Abstracts
- Pub Date:
- September 2014
- Bibcode:
- 2014APS..DNP.CE013O