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

该奖项支持由特拉华州纽瓦克特拉华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大学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·费德曼合作开展的核物理合作研究。布鲁克海文国家实验室的理查德·卡斯顿和巴托尔的博士后乔纳森·恩格尔也将参与其中。这项研究将集中在核结构理论中的两个重要当代问题上。一个是对中子-质子单极-单极有效相互作用的系统研究，目的是获得有效核力的这一重要组成部分的简单形式，在所有元素范围内有效。另一种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丰中子锶-锆-钼区域的形状转变。目前的工作建立在以前合作的基础上，导致与这项提议中的拉丁美洲科学家发表了10篇论文，与其他科学家发表了12篇论文。早些时候，与费德曼合作研究的重点是开发统一的原子核形变壳层模型。这项新工作将为积极的研究增加国际维度。

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.