演題概要

ポスター発表

第2日　5月18日（木）　　P会場（多目的ホール）

2P-56　　PDF

新規Bradbury-Nielsen Ion Gateを用いた芳香族多価分子カチオンの反応追跡

(¹阪市大・ ²阪府大)
^o北庄司暉浩¹・ 吉川太基¹・ 藤原亮正²・ 菜嶋茂喜¹・ 八ッ橋知幸¹

Quadruply charged hexafluorobenzene and triply charged benzene molecular cations were produced in the femtosecond laser fields. We conclude that the difference of the highest charge for each molecular cation is attributed to their binding energies and charge distributions. Post-source decay spectra of C₆F₆^z+ (z = 1–4) and C₆H₆^z+ (z = 1–3) were measured by using the time-of-flight mass spectrometer equipped with newly constructed Bradbury-Nielsen ion gate (BNG) and curved-field reflectron. The gate function of our BNG was 36 ns (fwhm) in width, and the rise and fall times were 5 ns. Post-source decay was not observed for both molecules, and therefore the lifetimes were estimated to be more than 10 μs for C₆F₆⁴⁺ and 7 μs for C₆H₆³⁺.