Measurement of the neutron-capture cross section of 76Ge and 74Ge below 15 MeV and its relevance to 0 ν β β decay searches of 76Ge

Bhike, Megha; Fallin, B.; Krishichayan,; Tornow, W.

doi:10.1016/j.physletb.2014.12.004

Title: Measurement of the neutron-capture cross section of 76Ge and 74Ge below 15 MeV and its relevance to $0 ν β β$ decay searches of 76Ge

Abstract

The neutron radiative-capture cross section of ⁷⁶Ge was measured between 0.4 and 14.8 MeV using the activation technique. Germanium samples with the isotopic abundance of ~86% ⁷⁶Ge and ~14% ⁷⁴Ge used in the 0νββ searches by the GERDA and Majorana Collaborations were irradiated with monoenergetic neutrons produced at eleven energies via the ³H(p,n)³He, ²H(d,n)³He and ³H(d,n)⁴He reactions. Previously, data existed only at thermal energies and at 14 MeV. As a by-product, capture cross-section data were also obtained for ⁷⁴Ge at neutron energies below 8 MeV. Indium and gold foils were irradiated simultaneously for neutron fluence determination. High-resolution γ-ray spectroscopy was used to determine the γ-ray activity of the daughter nuclei of interest. For the ⁷⁶Ge total capture cross section the present data are in good agreement with the TENDL-2013 model calculations and the ENDF/B-VII.1 evaluations, while for the ⁷⁴Ge(n,γ)⁷⁵Ge reaction, the present data are about a factor of two larger than predicted. It was found that the ⁷⁴Ge(n,γ)⁷⁵Ge yield in the High-Purity Germanium (HPGe) detectors used by the GERDA and Majorana Collaborations is only about a factor of two smaller than the ⁷⁶Ge(n,γ)⁷⁷Ge yield due to the larger cross section of the former reaction.

Authors:: Bhike, Megha; Fallin, B.; Krishichayan,; Tornow, W.

Publication Date:: Sun Feb 01 00:00:00 EST 2015

Research Org.:: Duke Univ., Durham, NC (United States)

Sponsoring Org.:: USDOE Office of Science (SC), Nuclear Physics (NP); USDOE National Nuclear Security Administration (NNSA)

OSTI Identifier:: 1197956

Alternate Identifier(s):: OSTI ID: 1193638

Grant/Contract Number:: FG02-97ER41033; NA0001839

Resource Type:: Published Article

Journal Name:: Physics Letters B

Additional Journal Information:: Journal Name: Physics Letters B Journal Volume: 741 Journal Issue: C; Journal ID: ISSN 0370-2693

Publisher:: Elsevier

Country of Publication:: Netherlands

Language:: English

Subject:: 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; neutron radiative capture; neutron induced background; neutrino detectors; double-beta decay detectors; dark matter detectors

Citation Formats


                    Bhike, Megha, Fallin, B., Krishichayan,, and Tornow, W. Measurement of the neutron-capture cross section of 76Ge and 74Ge below 15 MeV and its relevance to 0 ν β β decay searches of 76Ge.  Netherlands: N. p., 2015. 
Web.  doi:10.1016/j.physletb.2014.12.004.

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                    Bhike, Megha, Fallin, B., Krishichayan,, & Tornow, W. Measurement of the neutron-capture cross section of 76Ge and 74Ge below 15 MeV and its relevance to 0 ν β β decay searches of 76Ge.  Netherlands.  https://doi.org/10.1016/j.physletb.2014.12.004

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                    Bhike, Megha, Fallin, B., Krishichayan,, and Tornow, W. Sun .  
"Measurement of the neutron-capture cross section of 76Ge and 74Ge below 15 MeV and its relevance to 0 ν β β decay searches of 76Ge".  Netherlands.  https://doi.org/10.1016/j.physletb.2014.12.004.

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@article{osti_1197956,

  title        = {Measurement of the neutron-capture cross section of 76Ge and 74Ge below 15 MeV and its relevance to 0 ν β β decay searches of 76Ge},

  author       = {Bhike, Megha and Fallin, B. and Krishichayan, and Tornow, W.},

  abstractNote = {The neutron radiative-capture cross section of ⁷⁶Ge was measured between 0.4 and 14.8 MeV using the activation technique. Germanium samples with the isotopic abundance of ~86% ⁷⁶Ge and ~14% ⁷⁴Ge used in the 0νββ searches by the GERDA and Majorana Collaborations were irradiated with monoenergetic neutrons produced at eleven energies via the ³H(p,n)³He, ²H(d,n)³He and ³H(d,n)⁴He reactions. Previously, data existed only at thermal energies and at 14 MeV. As a by-product, capture cross-section data were also obtained for ⁷⁴Ge at neutron energies below 8 MeV. Indium and gold foils were irradiated simultaneously for neutron fluence determination. High-resolution γ-ray spectroscopy was used to determine the γ-ray activity of the daughter nuclei of interest. For the ⁷⁶Ge total capture cross section the present data are in good agreement with the TENDL-2013 model calculations and the ENDF/B-VII.1 evaluations, while for the ⁷⁴Ge(n,γ)⁷⁵Ge reaction, the present data are about a factor of two larger than predicted. It was found that the ⁷⁴Ge(n,γ)⁷⁵Ge yield in the High-Purity Germanium (HPGe) detectors used by the GERDA and Majorana Collaborations is only about a factor of two smaller than the ⁷⁶Ge(n,γ)⁷⁷Ge yield due to the larger cross section of the former reaction.},

  doi          = {10.1016/j.physletb.2014.12.004},

  journal      = {Physics Letters B},

  number       = C,

  volume       = 741,

  place        = {Netherlands},

  year         = {Sun Feb 01 00:00:00 EST 2015},

  month        = {Sun Feb 01 00:00:00 EST 2015}

}

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Title: Measurement of the neutron-capture cross section of 76Ge and 74Ge below 15 MeV and its relevance to 0 ν β β decay searches of 76Ge

Abstract

Citation Formats

Probing new physics models of neutrinoless double beta decay with SuperNEMO journal, November 2010

Thermal Neutron Activation Cross Sections journal, November 1947

Radioactive Ge 77 and Ge 7 7 m journal, August 1957

JENDL-4.0: A New Library for Nuclear Science and Engineering journal, January 2011

Modern Nuclear Data Evaluation with the TALYS Code System journal, December 2012

Neutron production cross sections and energies for the reactions T(p,n)3He, D(d,n)3He, and T(d,n)4He journal, June 1973

Initial performance of the CUORE-0 experiment journal, August 2014

Thermal Neutron Capture Cross Sections journal, October 1952

Double beta decay, Majorana neutrinos, and neutrino mass journal, April 2008

The MAJORANA DEMONSTRATOR Neutrinoless Double-Beta Decay Experiment journal, January 2014

Limit on Neutrinoless β β Decay of Xe 136 from the First Phase of KamLAND-Zen and Comparison with the Positive Claim in Ge 76 journal, February 2013

Cross sections for the radiative capture of fast neutrons by Ge74, Cs133, and Os192 journal, December 1967

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Measurements of the 40 Ar(n, γ ) 41 Ar radiative-capture cross section between 0.4 and 14.8 MeV journal, September 2014

Thermal neutron capture cross-section of 76Ge journal, March 2009

ENDF/B-VII.1 Nuclear Data for Science and Technology: Cross Sections, Covariances, Fission Product Yields and Decay Data journal, December 2011

Thermal neutron capture cross section of Ge 74 journal, February 2010

Isomere Wirkungsquerschnittsverhältnisse beim thermischen Neutroneneinfang im Bereich der 2p 1/2 und 1g 9/2 Schalenmodellzustände journal, February 1968

Scintillator phase of the SNO+ experiment journal, July 2012

Neutron-capture cross-section measurements of Xe 136 between 0.4 and 14.8 MeV journal, March 2014

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Search for Neutrinoless Double-Beta Decay in Xe 136 with EXO-200 journal, July 2012

Thermal-Neutron Activation Cross Sections of Ge and the Isomeric Ratio Rule journal, November 1957

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Title: Measurement of the neutron-capture cross section of 76Ge and 74Ge below 15 MeV and its relevance to $0 ν β β$ decay searches of 76Ge

Probing new physics models of neutrinoless double beta decay with SuperNEMO
journal, November 2010

Thermal Neutron Activation Cross Sections
journal, November 1947

Radioactive ${Ge}^{77}$ and ${Ge}^{77 m}$
journal, August 1957

JENDL-4.0: A New Library for Nuclear Science and Engineering
journal, January 2011

Modern Nuclear Data Evaluation with the TALYS Code System
journal, December 2012

Neutron production cross sections and energies for the reactions T(p,n)3He, D(d,n)3He, and T(d,n)4He
journal, June 1973

Initial performance of the CUORE-0 experiment
journal, August 2014

Thermal Neutron Capture Cross Sections
journal, October 1952

Double beta decay, Majorana neutrinos, and neutrino mass
journal, April 2008

The MAJORANA DEMONSTRATOR Neutrinoless Double-Beta Decay Experiment
journal, January 2014

Limit on Neutrinoless $β β$ Decay of ${}^{136}{Xe}$ from the First Phase of KamLAND-Zen and Comparison with the Positive Claim in ${}^{76}{Ge}$
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Cross sections for the radiative capture of fast neutrons by Ge74, Cs133, and Os192
journal, December 1967

Messungen derK-Konversionskoeffizienten und der Aktivierungsquerschnitte der isomeren Atomkerne Se77m , Se79m , Ge75m und Ge77m
journal, October 1962

Measurements of the 40 Ar(n, γ ) 41 Ar radiative-capture cross section between 0.4 and 14.8 MeV
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Thermal neutron capture cross-section of 76Ge
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ENDF/B-VII.1 Nuclear Data for Science and Technology: Cross Sections, Covariances, Fission Product Yields and Decay Data
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