TY - GEN AU - Wu,Bin AU - Xia,Lei AU - Li,Hong-Kai AU - Zeng,Xian-Jin AU - Tian,Shan Xi TI - Positive/negative ion velocity mapping apparatus for electron-molecule reactions SN - 1089-7623 PY - 2012///0615 N1 - Publication Type: Journal Article UR - https://doi.org/10.1063/1.3678328 ER -