Fission barriers: How do they affect the R-process?

I. Panov; B. Pfeiffer; K.L. Kratz; E. Kolbe; T. Rauscher; Friedrich-Karl Thielemann

Fission barriers: How do they affect the R-process?

I. Panov, B. Pfeiffer, K.L. Kratz, E. Kolbe, T. Rauscher, Friedrich-Karl Thielemann

Centre for Astrophysics Research (CAR)

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

Abstract

Fission is an important process which is responsible not only for the yields of transuranium isotopes, but may have a strong influence on the formation of the majority of heavy nuclei due to fission recycling in the r-process. Calculations of beta-delayed and neutron-induced fission rates were performed taking into account different fission barriers and mass formulae were done. It is shown that an increase of fission barriers results in naturally changes of fission rates, but that the absolute values of fission rates are nevertheless sufficiently high and lead to the termination of the r-process. Furthermore it is discussed, that the probability of triple fission could be high for A > 260 and have an affect on the formation on the heaviest nuclei.

Original language	English
Title of host publication	Seminar on Fission: Pont D'OyeV
Editors	C. Wagemans, J. Wagemans, P. D'Hondt
Publisher	World Scientific Publishing
Pages	3-12
Number of pages	10
ISBN (Print)	981-238-792-7
Publication status	Published - Feb 2004
Event	5th Seminar on Fission - Habay la Neuve, Belgium Duration: 16 Sept 2003 → 19 Sept 2003

Conference

Conference	5th Seminar on Fission
Country/Territory	Belgium
City	Habay la Neuve
Period	16/09/03 → 19/09/03

Keywords

TERNARY FISSION
MODEL
PROCESS NUCLEOSYNTHESIS
RICH
RATES
NEUTRON-STAR MERGERS
PROCESS ABUNDANCES
STABILITY
BETA-DELAYED FISSION
ETFSI METHOD

Cite this

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title = "Fission barriers: How do they affect the R-process?",

abstract = "Fission is an important process which is responsible not only for the yields of transuranium isotopes, but may have a strong influence on the formation of the majority of heavy nuclei due to fission recycling in the r-process. Calculations of beta-delayed and neutron-induced fission rates were performed taking into account different fission barriers and mass formulae were done. It is shown that an increase of fission barriers results in naturally changes of fission rates, but that the absolute values of fission rates are nevertheless sufficiently high and lead to the termination of the r-process. Furthermore it is discussed, that the probability of triple fission could be high for A > 260 and have an affect on the formation on the heaviest nuclei.",

keywords = "TERNARY FISSION, MODEL, PROCESS NUCLEOSYNTHESIS, RICH, RATES, NEUTRON-STAR MERGERS, PROCESS ABUNDANCES, STABILITY, BETA-DELAYED FISSION, ETFSI METHOD",

author = "I. Panov and B. Pfeiffer and K.L. Kratz and E. Kolbe and T. Rauscher and Friedrich-Karl Thielemann",

year = "2004",

month = feb,

language = "English",

isbn = "981-238-792-7",

pages = "3--12",

editor = "C. Wagemans and J. Wagemans and P. D'Hondt",

booktitle = "Seminar on Fission: Pont D'OyeV",

publisher = "World Scientific Publishing",

address = "Singapore",

note = "5th Seminar on Fission ; Conference date: 16-09-2003 Through 19-09-2003",

}

TY - GEN

T1 - Fission barriers

T2 - 5th Seminar on Fission

AU - Panov, I.

AU - Pfeiffer, B.

AU - Kratz, K.L.

AU - Kolbe, E.

AU - Rauscher, T.

AU - Thielemann, Friedrich-Karl

PY - 2004/2

Y1 - 2004/2

N2 - Fission is an important process which is responsible not only for the yields of transuranium isotopes, but may have a strong influence on the formation of the majority of heavy nuclei due to fission recycling in the r-process. Calculations of beta-delayed and neutron-induced fission rates were performed taking into account different fission barriers and mass formulae were done. It is shown that an increase of fission barriers results in naturally changes of fission rates, but that the absolute values of fission rates are nevertheless sufficiently high and lead to the termination of the r-process. Furthermore it is discussed, that the probability of triple fission could be high for A > 260 and have an affect on the formation on the heaviest nuclei.

AB - Fission is an important process which is responsible not only for the yields of transuranium isotopes, but may have a strong influence on the formation of the majority of heavy nuclei due to fission recycling in the r-process. Calculations of beta-delayed and neutron-induced fission rates were performed taking into account different fission barriers and mass formulae were done. It is shown that an increase of fission barriers results in naturally changes of fission rates, but that the absolute values of fission rates are nevertheless sufficiently high and lead to the termination of the r-process. Furthermore it is discussed, that the probability of triple fission could be high for A > 260 and have an affect on the formation on the heaviest nuclei.

KW - TERNARY FISSION

KW - MODEL

KW - PROCESS NUCLEOSYNTHESIS

KW - RICH

KW - RATES

KW - NEUTRON-STAR MERGERS

KW - PROCESS ABUNDANCES

KW - STABILITY

KW - BETA-DELAYED FISSION

KW - ETFSI METHOD

M3 - Conference contribution

SN - 981-238-792-7

SP - 3

EP - 12

BT - Seminar on Fission: Pont D'OyeV

A2 - Wagemans, C.

A2 - Wagemans, J.

A2 - D'Hondt, P.

PB - World Scientific Publishing

Y2 - 16 September 2003 through 19 September 2003

ER -

Fission barriers: How do they affect the R-process?

Abstract

Conference

Keywords

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