U.S.-Bulgaria Research on Electromagnetic Cascades in Particle Astrophysics

特拉华大学的托多尔·斯坦耶夫博士和保加利亚核研究所和核能研究所的H·P·万科夫博士开展的这个美国-保加利亚研究项目的主要目的是研究电磁淋浴行为。这些阵雨或级联伴随着来自天体物理源的高能粒子信号的产生、传播和探测。联合研究工作将集中于通过观察强子簇射和光子簇射之间的差异来确定簇射的性质。预计结果将提供有关能量耗散的细节，并可能被证明有助于识别和分析这些与宇宙辐射起源有关的高能信号。这个基本粒子物理项目通过使美国和东欧的专家能够将互补的人才结合在一起，并在相互感兴趣和能力很强的领域汇集研究资源，实现了促进科学知识的计划目标。

The primary purpose of this U.S.-Bulgaria research project between Dr. Todor Stanev of the University of Delaware and Dr. H. P. Vankov of the Bulgarian Institute for Nuclear Research and Nuclear Energy is to study electromagnetic shower behavior. These showers or cascades accompany the production, propagation and detection of high-energy particle signals from astrophysical sources. Joint research efforts will concentrate on defining shower properties by observing differences between hadronic and photonic showers. Results are expected to provide details on energy dissipation and may prove useful in identification and analysis of these high- energy signals in relation to the origin of cosmic radiation. This project in elementary particle physics fulfills the program objective of advancing scientific knowledge by enabling experts in the United States and Eastern Europe to combine complementary talents and pool research resources in areas of strong mutual interest and competence.