Measurements of isomeric cross sections for (n,2n) reaction on 140Ce, 142Nd and 144Sm isotopes around 14 MeV

I. A. Reyhancan; M. Bostan; A. Durusoy; A. Elmali; A. Baykal; Y. Özbir

doi:10.1016/S0306-4549(03)00100-2

Measurements of isomeric cross sections for (n,2n) reaction on ¹⁴⁰Ce, ¹⁴²Nd and ¹⁴⁴Sm isotopes around 14 MeV

I. A. Reyhancan^*, M. Bostan, A. Durusoy, A. Elmali, A. Baykal, Y. Özbir

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

In this study, activation cross sections were measured for the ¹⁴⁰Ce(n,2n)^139mCe, ¹⁴²Nd(n,2n)^141mNd and ¹⁴⁴Sm(n,2n)^143mSm reactions at six different neutron energies from 13.5 and 14.8 MeV. The fast neutrons were produced via the ³H(d,n)⁴He reaction on SAMES T-400 neutron generator. The cyclic activation technique was used. Induced γ activities were measured by a high-resolution γ-ray spectrometer with a high-purity germanium (HpGe) detector. Corrections were made for the effects of γ-ray attenuation, dead-time and fluctuation of neutron flux. For these reactions, statistical model calculations for which the pre-equilibrium emission effects are taken into consideration were also performed between 13.6 and 14.8 MeV energy range. Theoretical excitation functions and experimental results were plotted together with previous works.

Original language	English
Pages (from-to)	1539-1547
Number of pages	9
Journal	Annals of Nuclear Energy
Volume	30
Issue number	15
DOIs	https://doi.org/10.1016/S0306-4549(03)00100-2
Publication status	Published - Oct 2003
Externally published	Yes

Funding

This work was supported by the International Atomic Energy, Vienna, under Research Contract number 9506/RO and the Research Fund of the University of Istanbul. The authors wish to thank to Dr. G. Tarcan for his excellent technical assistance.

Funders	Funder number
International Atomic Energy	9506/RO
Istanbul Üniversitesi

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title = "Measurements of isomeric cross sections for (n,2n) reaction on 140Ce, 142Nd and 144Sm isotopes around 14 MeV",

abstract = "In this study, activation cross sections were measured for the 140Ce(n,2n)139mCe, 142Nd(n,2n)141mNd and 144Sm(n,2n)143mSm reactions at six different neutron energies from 13.5 and 14.8 MeV. The fast neutrons were produced via the 3H(d,n)4He reaction on SAMES T-400 neutron generator. The cyclic activation technique was used. Induced γ activities were measured by a high-resolution γ-ray spectrometer with a high-purity germanium (HpGe) detector. Corrections were made for the effects of γ-ray attenuation, dead-time and fluctuation of neutron flux. For these reactions, statistical model calculations for which the pre-equilibrium emission effects are taken into consideration were also performed between 13.6 and 14.8 MeV energy range. Theoretical excitation functions and experimental results were plotted together with previous works.",

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T1 - Measurements of isomeric cross sections for (n,2n) reaction on 140Ce, 142Nd and 144Sm isotopes around 14 MeV

AU - Reyhancan, I. A.

AU - Bostan, M.

AU - Durusoy, A.

AU - Elmali, A.

AU - Baykal, A.

AU - Özbir, Y.

PY - 2003/10

Y1 - 2003/10

N2 - In this study, activation cross sections were measured for the 140Ce(n,2n)139mCe, 142Nd(n,2n)141mNd and 144Sm(n,2n)143mSm reactions at six different neutron energies from 13.5 and 14.8 MeV. The fast neutrons were produced via the 3H(d,n)4He reaction on SAMES T-400 neutron generator. The cyclic activation technique was used. Induced γ activities were measured by a high-resolution γ-ray spectrometer with a high-purity germanium (HpGe) detector. Corrections were made for the effects of γ-ray attenuation, dead-time and fluctuation of neutron flux. For these reactions, statistical model calculations for which the pre-equilibrium emission effects are taken into consideration were also performed between 13.6 and 14.8 MeV energy range. Theoretical excitation functions and experimental results were plotted together with previous works.

AB - In this study, activation cross sections were measured for the 140Ce(n,2n)139mCe, 142Nd(n,2n)141mNd and 144Sm(n,2n)143mSm reactions at six different neutron energies from 13.5 and 14.8 MeV. The fast neutrons were produced via the 3H(d,n)4He reaction on SAMES T-400 neutron generator. The cyclic activation technique was used. Induced γ activities were measured by a high-resolution γ-ray spectrometer with a high-purity germanium (HpGe) detector. Corrections were made for the effects of γ-ray attenuation, dead-time and fluctuation of neutron flux. For these reactions, statistical model calculations for which the pre-equilibrium emission effects are taken into consideration were also performed between 13.6 and 14.8 MeV energy range. Theoretical excitation functions and experimental results were plotted together with previous works.

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U2 - 10.1016/S0306-4549(03)00100-2

DO - 10.1016/S0306-4549(03)00100-2

M3 - Article

AN - SCOPUS:0037671477

SN - 0306-4549

VL - 30

SP - 1539

EP - 1547

JO - Annals of Nuclear Energy

JF - Annals of Nuclear Energy

IS - 15

ER -

Measurements of isomeric cross sections for (n,2n) reaction on ¹⁴⁰Ce, ¹⁴²Nd and ¹⁴⁴Sm isotopes around 14 MeV

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