U.S.-Argentina Cooperative Research: Theoretical Studies in Nuclear Structure Physics

该奖项支持特拉华州纽瓦克市特拉华州大学巴托尔研究所的斯图尔特·皮特尔与阿根廷布宜诺斯艾利斯国家原子能委员会的阿尔贝托·埃切戈扬和布宜诺斯艾利斯大学的佩德罗·费德曼在核物理学方面的合作研究。布鲁克海文国家实验室的理查德·卡斯滕和巴托尔大学的博士后乔纳森·恩格尔也将参加。本研究将集中于核结构理论中两个重要的当代问题。一个是对中子-质子单极子-单极子有效相互作用的系统研究，目的是得到有效核力的这一重要组成部分的简单形式，在所有元素范围内都有效。另一个是发展一种新的核壳模型计算方法，用于研究元素周期表中富中子的锶-锆-钼区发生的形状转变。目前的工作建立在以前的合作基础上，与拉丁美洲科学家在本提案中发表了10篇论文，并与其他科学家发表了12篇论文。与费德曼博士合作研究的早期重点是开发核变形的统一壳层模型。这项新工作将为目前的研究增加一个国际层面。

This award supports cooperative research in nuclear physics to be conducted by Stuart Pittel of the Bartol Research Institute at the University of Delaware in Newark, Delaware collaborating with Alberto Etchegoyen of the National Commission on Atomic Energy and Pedro Federman of the University of Buenos Aires, both in Buenos Aires, Argentina. Also participating will be Richard Casten of Brookhaven National Laboratory and Jonathan Engel, a postdoc at Bartol. The research will focus on two important contemporary problems in nuclear structure theory. One is a systematic study of neutron-proton monopole-monopole effective inter- actions with the goal of obtaining a simple form for this important component of the effective nuclear force, valid over the whole range of elements. The other is to develop a new approach to nuclear shell model calculations to be applied to a study of the shape transitions which occur in the neutron-rich strontium-zirconium-molybdenum region of the periodic table. The current work builds on previous collaborations resulting in ten publications with the Latin American scientists in this proposal and twelve more with others. The earlier focus of cooperative research with Dr. Federman was on the development of a unified shell model of nuclear deformation. The new work will add an international dimension to active research.