June 29, 2015 to July 3, 2015
Europe/Rome timezone

Compton scattering from 3He and 4He using an active target

Jul 2, 2015, 5:20 PM
Room PS1 (Building E, Polo Fibonacci, Pisa)

Room PS1

Building E, Polo Fibonacci, Pisa

Talk Few-Body Physics Working Group Parallel Session 6 - Few-Body Physics WG


John Annand (University of Glasgow)


An experiment to measure the differential cross section for Compton scattering from 3He and 4He at the MAMI tagged photon facility in Mainz is described. The objective is to measure the isoscalar nucleon electromagnetic polarisabilities and thus access the neutron polarisabilities. The experiment will use a high-pressure gas-scintillator active target to measure recoiling He ions in coincidence with the scattered photon, detected in the Crystal Ball and TAPS 4-Pi electromagnetic calorimeter. Recent work to develop a chiral effective field theory treatment of Compton scattering on 3He is also described, and the relative merits of using 2H, 3He or 4He as "neutron targets" discussed in the light of recent experiments on 2H.

Primary author

John Annand (University of Glasgow)

Presentation materials