Simulation of multi-particle correlation including emission of light mass fragments and its application

2016 Fiscal Year Final Research Report

• Project/Area Number: 25871111
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Nuclear engineering; General applied physics
• Research Institution: High Energy Accelerator Research Organization
• Principal Investigator: HAGIWARA MASAYUKI 大学共同利用機関法人高エネルギー加速器研究機構, 放射線科学センター, 研究機関講師 (10450363)
• Co-Investigator(Renkei-kenkyūsha): SANAMI Toshiya 大学共同利用機関法人高エネルギー加速器研究機構, 放射線科学センター, 教授 (90321538) ; YASHIMA Hiroshi 京都大学, 原子炉実験所, 助教 (40378972)
• Research Collaborator: MANCUSI Davide IRFU/Service de Physique Nucléaire, CEA, Centre de Saclay ; BOUDARD Alan IRFU/Service de Physique Nucléaire, CEA, Centre de Saclay ; LERAY Sylvie IRFU/Service de Physique Nucléaire, CEA, Centre de Saclay ; JOSEPH Cugnon University of Liège, Fundamental Interactions in Physics and Astrophysics
• Project Period (FY): 2013-04-01 – 2017-03-31
• Keywords: 核反応 / 核データ / 二重微分断面積 / フラグメント / 原子核工学 / イベントジェネレータ / 核内カスケード模型 / 蒸発模型

Outline of Final Research Achievements

Double-differential cross sections (DDXs) for nucleon-induced reactions at incident energies from tens of MeV to GeV resulting to the emission of light mass fragments (LMFs) are of particular importance in the microscopic analysis of radiation effects such as soft errors of micro-electronic devices, material damage and human dose. In order to improve the prediction accuracy of physical models, we revised the Liege intra-nuclear cascade model (INCL4.6) for composite particle emissions, by introducing the upper constraint for the acceptable momentum of nucleons (240 MeV/c) in the center-of-mass frame of the running cluster, a pick-up reaction process, Q-value correction and refraction by a nuclear potential, based on the recent experimental data systematically obtained in a wide range of targets and reactions. Besides, we incorporated the statistical multi-fragmentation model (SMM) into the generalized evaporation model (GEM) to reproduce high multiplicity reactions.

Free Research Field

原子力学