Tunable monoenergy positron annihilation spectroscopy of polyethylene glycol thin films

Kuang Peng^{1, 2}, Han Xiao-Long³, Cao Xing-Zhong¹, Xia Rui¹, Zhang Peng¹, Wang Bao-Yi^{1, 2, †}

(color online) The result of CDB. The resolution of the high momentum region improves due to the decrease of background.