scholarly journals Ultrafast time-resolved photoelectron and ion fragment momentum imaging of vacuum ultraviolet-excited molecules

2020 ◽  
Vol 1412 ◽  
pp. 072048
Author(s):  
D S Slaughter ◽  
K A Larsen ◽  
F P Sturm ◽  
A Belkacem ◽  
P Ranitovic ◽  
...  
Keyword(s):  
Vacuum Ultraviolet ◽  
Time Resolved ◽  
Excited Molecules ◽  
Momentum Imaging

scholarly journals Tracking ground state Ba+ions in an expanding laser–plasma plume using time-resolved vacuum ultraviolet photoionization imaging

2004 ◽  
Vol 22 (3) ◽  
pp. 207-213 ◽  
Author(s):  
J.S. HIRSCH ◽  
K.D. KAVANAGH ◽  
E.T. KENNEDY ◽  
J.T. COSTELLO ◽  
P. NICOLOSI ◽  
...  
Keyword(s):  
Spatial Distribution ◽  
Laser Plasma ◽  
Ground State ◽  
Column Density ◽  
Vacuum Ultraviolet ◽  
Plasma Plume ◽  
Experimental System ◽  
Time Resolved ◽  
Density Maps ◽  
Ccd Array

We report results from a study of the integrated column density and expansion dynamics of ground-state-selected Ba+ions in a laser–plasma plume using a new experimental system—VPIF (vacuum-ultraviolet photoabsorption imaging facility). The ions are tracked by recording the attenuation of a pulsed and collimated vacuum ultraviolet beam, tuned to the 5p–6dinner-shell resonance of singly ionized barium, as the expanding plasma plume moves across it. The attenuated beam is allowed to fall on a CCD array where the spatial distribution of the absorption is recorded. Time-resolved ion velocity and integrated column density maps are readily extracted from the photoionization images.

Kinetic Studies of Atomic Carbon, C[2p2 (3PJ)], with Thiols by Time-Resolved Atomic Resonance Absorption Spectroscopy in the Vacuum Ultraviolet

2005 ◽  
Vol 30 (1-2) ◽  
pp. 115-125 ◽  
Author(s):  
Mahendra P. Deeyamulla ◽  
David Husain
Keyword(s):  
Vacuum Ultraviolet ◽  
Dimethyl Sulfide ◽  
Kinetic Studies ◽  
Reaction Rates ◽  
Atomic Spectroscopy ◽  
Atomic Carbon ◽  
Time Resolved ◽  
Sulfur Containing ◽  
Electronic Ground ◽  
Pulsed Irradiation

Reaction rates of atomic carbon in its electronic ground state, C[2p2 (3PJ)], with a range of large sulfur-containing molecules have been investigated using time-resolved atomic spectroscopy in the vacuum ultraviolet following pulsed irradiation. Absolute rate data for the collisional removal at 300 K of C(23PJ) by the gases 1-propanethiol, 1-butanethiol, 1-pentanethiol, 2-propanethiol, 2-methyl-1-propanethiol, 2-methyl-2-propanethiol and dimethyl sulfide are reported. All processes proceed at rates of the order of the collision numbers, supporting an overall mechanism of C-atom insertion into the S–H bond following initial addition, which is energetically favourable, a mechanism demonstrated analogously hitherto with H2S and where H-atom abstraction would also be endothermic.

Determination of radiative lifetimes of neutral sulfur by time-resolved vacuum-ultraviolet laser spectroscopy

1997 ◽  
Vol 55 (3) ◽  
pp. 1836-1841 ◽  
Author(s):  
U. Berzinsh ◽  
Luo Caiyan ◽  
R. Zerne ◽  
S. Svanberg ◽  
E. Biémont
Keyword(s):  
Laser Spectroscopy ◽  
Vacuum Ultraviolet ◽  
Radiative Lifetimes ◽  
Time Resolved ◽  
Ultraviolet Laser ◽  
Vacuum Ultraviolet Laser

Probing Ultrafast Molecular Dynamics by Time-Resolved Coincident Ion Momentum Imaging

2019 ◽  
Author(s):  
Farzaneh Ziaee ◽  
Kurtis Borne ◽  
Kanaka Raju P. ◽  
Ruaridh Forbes ◽  
Yubaraj Malakar ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Time Resolved ◽  
Momentum Imaging
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