Electron stimulated desorption from the surface of solid Ne: kinetic energy and angular distributions of desorbed metastables

1993 ◽  
Vol 283 (1-3) ◽  
pp. A240
Author(s):  
D.E. Weibel ◽  
T. Hirayama ◽  
I. Arakawa
Keyword(s):  
Kinetic Energy ◽  
Angular Distributions ◽  
Electron Stimulated Desorption ◽  
Energy And Angular Distributions

scholarly journals INFLUENCE OF NEUTRON ENRICHMENT ON DISINTEGRATION MODES OF COMPOUND NUCLEI

2008 ◽  
Vol 17 (10) ◽  
pp. 2359-2362 ◽  
Author(s):  
E. BONNET ◽  
J. P. WIELECZKO ◽  
J. GOMEZ DEL CAMPO ◽  
M. LA COMMARA ◽  
S. BARLINI ◽  
...  
Keyword(s):  
Kinetic Energy ◽  
Transition State ◽  
Cross Sections ◽  
Angular Distributions ◽  
Decay Mechanism ◽  
Excited Nuclei ◽  
Energy And Angular Distributions

Cross sections, kinetic energy and angular distributions of fragments with charge 6 ≤ Z ≤ 28 emitted in 78,82 Kr +40 C at 5.5 MeV/A reactions were measured at the GANIL facility using the INDRA apparatus. This experiment aims to investigate the influence of the neutron enrichment on the decay mechanism of excited nuclei. Data are discussed in comparison with predictions of transition state and Hauser-Feshbach models.

scholarly journals Photodissociation Dynamics of Arn+ Cluster Ions

1994 ◽  
Vol 14 (1-3) ◽  
pp. 15-29 ◽  
Author(s):  
Takashi Nagata
Keyword(s):  
Kinetic Energy ◽  
Energy Release ◽  
Simulation Analysis ◽  
Kinetic Energy Release ◽  
Cluster Ions ◽  
Angular Distributions ◽  
High Kinetic Energy ◽  
Spectral Profiles ◽  
Direct Dissociation ◽  
Energy And Angular Distributions

The time-of-flight (TOF) spectra of Ar+ and Ar fragments produced in the photodissociation of Arn+ (3 ≦ n ≧ 24) were measured at wavelength around 540 nm. The kinetic-energy and angular distributions of the neutral photofragments were obtained for n = 3, 9 and 24 by a simulation analysis of the measured TOF spectral profiles. The overall aspect of the photodissociation process of Arn+ is deduced from these distributions within the context of trimer ion core model; a linear Ar3+ core is solvated by neutral Ar atoms. For Arn+ with 4 ≦ n ≲ 14, direct dissociation of the Ar3+ chromophoric core gives rise to Ar+ and/or Ar fragments with a high kinetic energy release. For the larger Arn+ (n ≳ 14), the production of high-kinetic-energy fragments is suppressed; “evaporation” of the solvent Ar atoms is instead the dominant channel of photofragmentation.

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