Negative-ion Research and Source Development

9417364米德尔顿奖将支持和维持宾夕法尼亚大学的负离子源和AMS开发计划，为期三年。该计划的主要目标是：(1)扩大目前正在对碳和铝进行的多原子和分子离子的研究。特别是，利用开发的方法，通过串列Van de Graaff加速器加速探测和核实双负碳星团，寻找新的双负碳星团。(2)修订、扩充和准备《负离子食谱》正式出版。许多新的数据将包括关于多原子和分子离子以及一些常见化合物和矿物的负离子特征。(3)继续发展有望产生比目前高强度源大一个数量级的电流的三极管源。这种源的可获得性将在包括核科学在内的几个领域产生影响，在这些领域，它应该能够使更高强度的相对论重离子束在RHIC中加速。(4)发展加速器质谱学的新技术。***

9417364 Middleton This award will support and maintain the negative-ion source and AMS development program at the University of Pennsylvania for a period of three years. The principal objective of the program are: (1) to extend the present studies of polyatomic and molecular ions that are currently underway with carbon and aluminum. In particular, to search for new double-negative clusters, utilizing the methods developed to detect and veridy double-negative clusters of carbon by acceleration in the tandem Van de Graaff accelerator. (2) to revise, expand, and prepare the Negative Ion Cookbook for formal publication. Much new data would be included on polyatomic and molecular ions and on the negative-ion signatures of some common compounds and minerals. (3) Continue to develop the triode source that is expected to produce an order of magnitude more current than the present high-intensity source. The availability of such a source will have impact in several fields including nuclear science where it should enable higher intensity relativistic heavy-ion beams to be accelerated in RHIC. (4) develop new techniques for accelerator mass spectroscopy (AMS). ***