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Ion-Neutral Photofragment Coincidence Imaging of Photodissociation Dynamics of Ionic Species
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作者 Ze-feng Hua Yun-xiao Zhao +3 位作者 you-qing li Gao-ming Hu Yang Chen Dong-feng Zhao 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2021年第1期81-86,I0011,I0012,共8页
The recen tly cons true ted cryogenic cylindrical ion trap velocity map imaging spectrometer(CIT-VMI)has been upgraded for coincidence imaging of both ionic and neutral photofragments from photodissociation of ionic s... The recen tly cons true ted cryogenic cylindrical ion trap velocity map imaging spectrometer(CIT-VMI)has been upgraded for coincidence imaging of both ionic and neutral photofragments from photodissociation of ionic species.The prepared ions are cooled down in a homemade cryogenic cylindrical ion trap and then extracted for photodissociation experiments.Wi th the newly designed elec trie fields for extraction and acceleration,the ion beam can be accelerated to more than 4500 eV,which is necessary for velocity imaging of the neutral photofragments by using the position-sensitive imaging detect or.The setup has been tested by the 355 nm pho todissocia tion dynamics of the argon dimer cat ion(Ar2+).From the recorded experimen tal images of both neu tral Ar and ionic Ar+fragments,we interpret velocity resolutions of△v/vu4.6%for neutral fragments,and△v/vul.5%for ionic fragments,respectively. 展开更多
关键词 Ion trap Velocity map imaging photofragment coincidence imaging
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