Tunable monoenergy positron annihilation spectroscopy of polyethylene glycol thin films
Kuang Peng
1, 2
, Han Xiao-Long
3
, Cao Xing-Zhong
1
, Xia Rui
1
, Zhang Peng
1
, Wang Bao-Yi
1, 2, †
(color online) Depth profile of
S
parameter for different PEG membranes.