A method to polarise antiprotons in storage rings and create polarised antineutrons

作者：Schoch B^*

来源：European Physical Journal A, 2010, 43(1): 5-9.

DOI：10.1140/epja/i2009-10888-0

An intense circularly polarised gamma-beam interacts with a cooled antiproton beam in a storage ring. Due to spin-dependent absorption cross-sections for the reaction gamma + (p) over bar -> pi(-) + (n) over bar a built-up of polarisation of the stored antiprotons takes place. Figures of merit around 0.1 can be reached in principle over a wide range of antiproton energies. In this process polarised antineutrons with polarisation P((n) over bar) > 70% emerge. The method is presented for the case of a 300MeV/c cooled antiproton beam.

• 出版日期2010-1