AI Article Synopsis
- The study investigates how 56Fe spallation occurs when it collides with hydrogen at high energy (1A GeV), utilizing the SPALADIN setup at GSI in a method called inverse kinematics.
- The research focuses on measuring the coincidence of low-energy light particles and fragments, which allows for a breakdown of the total reaction cross section into various deexcitation pathways.
- The findings indicate that among different deexcitation models tested, only the GEMINI model accurately explains the majority of the experimental results, suggesting that in this light system, multifragmentation may not be necessary to account for the observations.
Article Abstract
The spallation of 56Fe in collisions with hydrogen at 1A GeV has been studied in inverse kinematics with the large-aperture setup SPALADIN at GSI. Coincidences of residues with low-center-of-mass kinetic energy light particles and fragments have been measured allowing the decomposition of the total reaction cross section into the different possible deexcitation channels. Detailed information on the evolution of these deexcitation channels with excitation energy has also been obtained. The comparison of the data with predictions of several deexcitation models coupled to the INCL4 intranuclear cascade model shows that only GEMINI can reasonably account for the bulk of collected results, indicating that in a light system with no compression and little angular momentum, multifragmentation might not be necessary to explain the data.
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| http://dx.doi.org/10.1103/PhysRevLett.100.022701 | DOI Listing |
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