Mass Distribution of Fission Fragments and Abundances of Heavy Nuclei Produced in the r-Process

2021 ◽  
Vol 84 (5) ◽  
pp. 683-693
Author(s):  
I. V. Panov
Keyword(s):  
Mass Distribution ◽  
Heavy Nuclei ◽  
Fission Fragments ◽  
R Process

scholarly journals 10. General Discussion

1960 ◽  
Vol 10 ◽  
pp. 677-679 ◽  
Keyword(s):  
Yield Curve ◽  
Fission Products ◽  
Heavy Elements ◽  
Sikhote Alin ◽  
Heavy Nuclei ◽  
Fission Yield ◽  
Element Abundances ◽  
The Earth ◽  
R Process ◽  
Nova Outburst

1. p. SELINOV: Anomalous abundances of Te and Xe isotopes in meteorites and in the Earth permit us to draw some conclusions concerning the age of uranium and the processes of nucleogenesis. According to the estimate by Hoyle the amount of 254Cf disintegrated during a super-nova outburst is of the order of io29 g or io~4 of the stellar mass. According to the fission-yield curve the isotopes of Te comprise about 1 % of the mass of fission products. The abundances of Te 128-131 are anomalously high, due to the fission of heavy nuclei. The element abundances do not permit us to draw any conclusions about the r-process. The isotopes of Te and Xe with even mass numbers give evidence in favour of the r-process (anomalously high abundances). But the amount of Te in meteorites and in Earth is about 1000 times less than it should be if formed during the outburst. The Sikhote- Alin meteorite shows the same anomaly. We may conclude that the heavy elements of the solar system have been formed not in a single super-nova outburst, but as a result of mixing from the totality of outbursts. According to Hoyle, this gives a definite estimate for the age of uranium.

The recoil characteristics of fission fragments produced by interaction of high-energy α-particles with heavy nuclei

1978 ◽  
Vol 46 (3) ◽  
pp. 488-494
Author(s):  
B. Grabež ◽  
Ž. Todorović ◽  
R. Antanasijević
Keyword(s):  
High Energy ◽  
Heavy Nuclei ◽  
Fission Fragments ◽  
Α Particles

Fission of heavy nuclei induced by stopped antiprotons. I. Inclusive characteristics of fission fragments

1994 ◽  
Vol 49 (5) ◽  
pp. 2555-2568 ◽  
Author(s):  
P. Hofmann ◽  
A. S. Iljinov ◽  
Y. S. Kim ◽  
M. V. Mebel ◽  
H. Daniel ◽  
...  
Keyword(s):  
Heavy Nuclei ◽  
Fission Fragments

Fission of heavy nuclei induced by stopped antiprotons. II. Correlations between fission fragments

1996 ◽  
Vol 54 (5) ◽  
pp. 2469-2476 ◽  
Author(s):  
Y. S. Kim ◽  
A. S. Iljinov ◽  
M. V. Mebel ◽  
P. Hofmann ◽  
H. Daniel ◽  
...  
Keyword(s):  
Heavy Nuclei ◽  
Fission Fragments

SSNTD study of the probable influence of alpha activity on the mass distribution of 252Cf fission fragments

1999 ◽  
Vol 30 (1) ◽  
pp. 127-129 ◽  
Author(s):  
Debasish Paul ◽  
Subrata Sen ◽  
Debasis Ghose ◽  
R.C Sastri
Keyword(s):  
Mass Distribution ◽  
Alpha Activity ◽  
Fission Fragments

The r-process element abundance with a realistic fission fragment mass distribution

2008 ◽  
Author(s):  
S. Chiba ◽  
H. Koura ◽  
T. Maruyama ◽  
M. Ohta ◽  
S. Tatsuda ◽  
...  
Keyword(s):  
Mass Distribution ◽  
Fission Fragment ◽  
Element Abundance ◽  
Fragment Mass ◽  
R Process ◽  
Process Element

scholarly journals FISSION CROSS SECTION IN THE SYNTHESIS OF THE 264Rf NUCLEUS VIA 26Mg+238U COMBINATION

2018 ◽  
Vol 127 (1A) ◽  
pp. 95
Author(s):  
Trần Viết Nhân Hào
Keyword(s):  
Mass Distribution ◽  
Cross Section ◽  
Compound Nucleus ◽  
Transfer Reaction ◽  
Fission Cross Section ◽  
Transfer Reactions ◽  
Heavy Nuclei ◽  
Fission Process ◽  
Rich Side

Our understanding of the fission mechanism has been still limited up to date, especially, for mass distribution of heavy nuclei or actinide ones. Since the heavy isotopes on the neutron-rich side of the nuclear chart cannot be accessed via capture reactions, it is thought that the mechanism can be studied via compound nuclei produced by multi-nucleon transfer reactions. In which, the fission process should be understood. In this report we mention the role of the transfer reaction <sup>26</sup>Mg + <sup>238</sup>U and an estimation of the cross section of the fission leds by the compound nucleus, <sup>264</sup>Rf.

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