In:
Chinese Physics Letters, IOP Publishing, Vol. 38, No. 8 ( 2021-09-01), p. 083301-
Abstract:
We revisit the laser-intensity-dependent ionization and fragmentation yields of C 60 molecules irradiated by 25-fs, 798-nm laser pulses based on the approach in which photoions are measured via a velocity map imaging spectrometer working in a time-sliced mode. This approach dramatically improves the signal-to-background ratio compared to those using a simple (traditional) time-of-flight mode (spectrometer), and thus allows us to measure the laser-intensity dependences down to a previously untouched region, which is expected to provide new insights into the intense-field ionization and fragmentation of C 60 . Indeed, we find that the saturation intensities for C 60 ionizations and the onset intensity for C 60 fragmentation are much lower than those reported in previous experiments. Furthermore, the derived saturation-intensity dependence on charge distribution demonstrates the validity of the over-the-barrier ionization using a conducting sphere model.
Type of Medium:
Online Resource
ISSN:
0256-307X
,
1741-3540
DOI:
10.1088/0256-307X/38/8/083301
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
2021
detail.hit.zdb_id:
2040565-0
SSG:
6,25
Permalink