scholarly journals Astrophysical reaction rate forBe9formation within a three-body approach

2014 ◽  
Vol 90 (4) ◽  
Author(s):  
J. Casal ◽  
M. Rodríguez-Gallardo ◽  
J. M. Arias ◽  
I. J. Thompson
Keyword(s):  
Reaction Rate ◽  
Three Body ◽  
Astrophysical Reaction Rate

Quantum three-body calculation of nonresonant triple-α reaction rate at low temperatures

2010 ◽  
Author(s):  
Kazuyuki Ogata ◽  
Masataka Kan ◽  
Masayasu Kamimura ◽  
Hajime Susa ◽  
Marcel Arnould ◽  
...  
Keyword(s):  
Low Temperatures ◽  
Reaction Rate ◽  
Three Body

The 19Ne(p,γ)20Na astrophysical reaction rate determined from measurements with a radioactive beam

1997 ◽  
Vol 616 (1-2) ◽  
pp. 107-114 ◽  
Author(s):  
G. Vancraeynest ◽  
C.R. Bain ◽  
F. Binon ◽  
R. Coszach ◽  
T. Davinson ◽  
...  
Keyword(s):  
Reaction Rate ◽  
Radioactive Beam ◽  
Astrophysical Reaction Rate

Astrophysical reaction rate for theF18(p,α)15O reaction

1996 ◽  
Vol 53 (4) ◽  
pp. 1950-1954 ◽  
Author(s):  
K. E. Rehm ◽  
M. Paul ◽  
A. D. Roberts ◽  
C. L. Jiang ◽  
D. J. Blumenthal ◽  
...  
Keyword(s):  
Reaction Rate ◽  
Astrophysical Reaction Rate

scholarly journals Astrophysical reaction rate for α(αn,γ)9Be by photodisintegration

2002 ◽  
Vol 709 (1-4) ◽  
pp. 467-486 ◽  
Author(s):  
K. Sumiyoshi ◽  
H. Utsunomiya ◽  
S. Goko ◽  
T. Kajino
Keyword(s):  
Reaction Rate ◽  
Astrophysical Reaction Rate

Calculation of astrophysical reaction rate of 82 Ge(n,γ) 83 Ge

2009 ◽  
Vol 33 (S1) ◽  
pp. 79-81
Author(s):  
Wang Mian ◽  
Chen Yong-Shou ◽  
Li Zhi-Hong ◽  
Liu Wei-Ping ◽  
Shu Neng-Chuan
Keyword(s):  
Reaction Rate ◽  
Astrophysical Reaction Rate

Negative ion – molecule reactions

1969 ◽  
Vol 47 (10) ◽  
pp. 1815-1820 ◽  
Author(s):  
E. E. Ferguson
Keyword(s):  
Charge Transfer ◽  
Rate Constants ◽  
Reaction Rate ◽  
Reaction Rate Constant ◽  
Negative Ion ◽  
Transfer Reactions ◽  
Ion Molecule Reactions ◽  
Charge Transfer Reactions ◽  
Three Body ◽  
Interchange Reactions

Laboratory reaction rate constant measurements for negative ion – atom interchange reactions, negative ion charge transfer reactions, and negative ion three-body association reactions of aeronomic interest are reviewed and the available data tabulated. The present experimental techniques in use are briefly summarized. Most of the rate constants have been measured only at 300 °K; in a few cases data is available at energies [Formula: see text] as well as at 300 °K, so that an indication of the energy dependence of the rate constants is available.

Flash photolysis under non-isothermal conditions

1967 ◽  
Vol 45 (20) ◽  
pp. 2369-2374 ◽  
Author(s):  
George Burns
Keyword(s):  
Temperature Rise ◽  
Rate Constants ◽  
Recombination Rate ◽  
Reaction Rate ◽  
Flash Photolysis ◽  
Bromine Atom ◽  
Fold Increase ◽  
Reaction Vessel ◽  
Reaction Rate Constants ◽  
Three Body

The temperature rise which accompanies every flash photolytic reaction interferes with, and often makes impractical, measurements of the reaction rate constants. This difficulty may be partly overcome if the whole reaction vessel is uniformly irradiated by both the photolytic and the analyzing flash lamps.A flash photolysis apparatus with these characteristics was used to study bromine atom recombination. A 10 to 15 fold gain in atomic concentration, which corresponds to a 100 to 225 fold increase in three-body recombination rate, compared with the work of previous authors, was achieved with this apparatus. The reaction rate constants were determined from the changes in absorption of Br2 at either 4 035 Å or at 4 980 Å. The recombination rate constant of bromine in an excess of helium at 90 ± 20 °C was found to be equal to (0.8 ± 0.3)109 l2 mole−2 s−1 (measured at 4 980 Å) and (0.5 ± 0.1)109 l2 mole−2 s−1 (measured at 4 035 Å). The results suggest that the technique herein described can yield meaningful data, even though the reaction was accompanied by a 105 °C temperature rise. There was little heat exchanged between the reacting gas and the walls of the reaction vessel. Consequently the reaction vessel behaved as an effective calorimeter throughout the reaction.

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