Indirect study of the stellar Ar34(α,p)K37 reaction rate through Ca40(p,t)Ca38 reaction measurements

Long, Alexander Makenzie; Adachi, T.; Beard, M.; Berg, G. P.  A.; Buthelezi, Z.; Carter, J.; Couder, M.; deBoer, R. J.; Fearick, R. W.; Förtsch, S. V.; Görres, J.; Mira, J. P.; Murray, S. H.  T.; Neveling, R.; Papka, P.; Smit, F. D.; Sideras-Haddad, E.; Swartz, J. A.; Talwar, R.; Usman, I. T.; Wiescher, M.; Van Zyl, J. J.; Volya, A.

doi:10.1103/PhysRevC.95.055803

Title: Indirect study of the stellar ${}^{34}{Ar} (α, p) {}^{37}K$ reaction rate through ${}^{40}{Ca} (p, t) {}^{38}{Ca}$ reaction measurements

Abstract

The ³⁴Ar(α,p) ³⁷K reaction is believed to be one of the last in a sequence of (α,p) and (p,γ) reactions within the T_z = -1 , sd-shell nuclei, known as the αp-process. This process is expected to influence the shape and rise times of luminosity curves coming from type I x-ray bursts (XRBs). With very little experimental information known on many of the reactions within the αp-process, stellar rates are calculated using a statistical model, such as Hauser-Feshbach. Questions on the applicability of a Hauser-Feshbach model for the ³⁴Ar (α,p) ³⁷K reaction arise due to level density considerations in the compound nucleus, ³⁸Ca . We have performed high energy-resolution forward-angle ⁴⁰Ca (p,t) ³⁸Ca measurements with the K = 600 spectrograph at iThemba LABS in order to identify levels above the α-threshold in ³⁸Ca . States identified in this work were then used to determine the ³⁴Ar (α,p) ³⁷K reaction rate based on a narrow-resonance formalism. Comparisons are made to two standard Hauser-Feshbach model predicted rates at XRB temperatures.

Authors:

Long, Alexander Makenzie ^[1]; Adachi, T. ^[2]; Beard, M. ^[3]; Berg, G. P. A. ^[3]; Buthelezi, Z. ^[4]; Carter, J. ^[5]; Couder, M. ^[3]; deBoer, R. J. ^[3]; Fearick, R. W. ^[6]; Förtsch, S. V. ^[4]; Görres, J. ^[3]; Mira, J. P. ^[7]; Murray, S. H. T. ^[4]; Neveling, R. ^[4]; Papka, P. ^[8]; Smit, F. D. ^[4]; Sideras-Haddad, E. ^[5]; Swartz, J. A. ^[9]; Talwar, R. ^[10]; Usman, I. T. ^[5] more »

Univ. of Notre Dame, IN (United States). Dept. of Physics and the Joint Inst. for Nuclear Astrophysics; Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Tohoku Univ., Sendai (Japan). Research Center for Electron Photon Science
Univ. of Notre Dame, IN (United States). Dept. of Physics and the Joint Inst. for Nuclear Astrophysics
iThemba Lab. for Accelerator Sciences, Somerset West, Western Cape (South Africa)
Univ. of Witwatersrand, Johannesburg (South Africa). School of Physics
Univ.of Cape Town, Rondebosch, Western Cape (South Africa). Physics Dept.
Univ. of Stellenbosch, Matieland, Western Cape (South Africa)
iThemba Lab. for Accelerator Sciences, Somerset West, Western Cape (South Africa); Univ. of Stellenbosch, Matieland, Western Cape (South Africa)
iThemba Lab. for Accelerator Sciences, Somerset West, Western Cape (South Africa); Univ. of Stellenbosch, Matieland, Western Cape (South Africa); Katholieke Univ. Leuven, Leuven (Belgium). Inst. for voor Kern- en Stralingsfysica,
Univ. of Notre Dame, IN (United States). Dept. of Physics and the Joint Inst. for Nuclear Astrophysics; Argonne National Lab. (ANL), Argonne, IL (United States)
Florida State Univ., Tallahassee, FL (United States). Dept. of Physics

Publication Date:: Wed May 10 00:00:00 EDT 2017

Research Org.:: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)

Sponsoring Org.:: USDOE Office of Science (SC). Nuclear Physics (NP) (SC-26); USDOE

OSTI Identifier:: 1392814

Alternate Identifier(s):: OSTI ID: 1356447

Report Number(s):: LA-UR-17-25567
Journal ID: ISSN 2469-9985; PRVCAN

Grant/Contract Number:: AC52-06NA25396; SC0009883

Resource Type:: Accepted Manuscript

Journal Name:: Physical Review C

Additional Journal Information:: Journal Volume: 95; Journal Issue: 5; Journal ID: ISSN 2469-9985

Publisher:: American Physical Society (APS)

Country of Publication:: United States

Language:: English

Subject:: 79 ASTRONOMY AND ASTROPHYSICS; Atomic and Nuclear Physics; Astronomy and Astrophysics

Citation Formats


                    Long, Alexander Makenzie, Adachi, T., Beard, M., Berg, G. P.  A., Buthelezi, Z., Carter, J., Couder, M., deBoer, R. J., Fearick, R. W., Förtsch, S. V., Görres, J., Mira, J. P., Murray, S. H.  T., Neveling, R., Papka, P., Smit, F. D., Sideras-Haddad, E., Swartz, J. A., Talwar, R., Usman, I. T., Wiescher, M., Van Zyl, J. J., and Volya, A. Indirect study of the stellar Ar34(α,p)K37 reaction rate through Ca40(p,t)Ca38 reaction measurements.  United States: N. p., 2017. 
Web.  doi:10.1103/PhysRevC.95.055803.

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                    Long, Alexander Makenzie, Adachi, T., Beard, M., Berg, G. P.  A., Buthelezi, Z., Carter, J., Couder, M., deBoer, R. J., Fearick, R. W., Förtsch, S. V., Görres, J., Mira, J. P., Murray, S. H.  T., Neveling, R., Papka, P., Smit, F. D., Sideras-Haddad, E., Swartz, J. A., Talwar, R., Usman, I. T., Wiescher, M., Van Zyl, J. J., & Volya, A. Indirect study of the stellar Ar34(α,p)K37 reaction rate through Ca40(p,t)Ca38 reaction measurements.  United States.  https://doi.org/10.1103/PhysRevC.95.055803

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                    Long, Alexander Makenzie, Adachi, T., Beard, M., Berg, G. P.  A., Buthelezi, Z., Carter, J., Couder, M., deBoer, R. J., Fearick, R. W., Förtsch, S. V., Görres, J., Mira, J. P., Murray, S. H.  T., Neveling, R., Papka, P., Smit, F. D., Sideras-Haddad, E., Swartz, J. A., Talwar, R., Usman, I. T., Wiescher, M., Van Zyl, J. J., and Volya, A. Wed .  
"Indirect study of the stellar Ar34(α,p)K37 reaction rate through Ca40(p,t)Ca38 reaction measurements".  United States.  https://doi.org/10.1103/PhysRevC.95.055803.  https://www.osti.gov/servlets/purl/1392814.

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@article{osti_1392814,

  title        = {Indirect study of the stellar Ar34(α,p)K37 reaction rate through Ca40(p,t)Ca38 reaction measurements},

  author       = {Long, Alexander Makenzie and Adachi, T. and Beard, M. and Berg, G. P.  A. and Buthelezi, Z. and Carter, J. and Couder, M. and deBoer, R. J. and Fearick, R. W. and Förtsch, S. V. and Görres, J. and Mira, J. P. and Murray, S. H.  T. and Neveling, R. and Papka, P. and Smit, F. D. and Sideras-Haddad, E. and Swartz, J. A. and Talwar, R. and Usman, I. T. and Wiescher, M. and Van Zyl, J. J. and Volya, A.},

  abstractNote = {The 34Ar(α,p) 37K reaction is believed to be one of the last in a sequence of (α,p) and (p,γ) reactions within the Tz = -1 , sd-shell nuclei, known as the αp-process. This process is expected to influence the shape and rise times of luminosity curves coming from type I x-ray bursts (XRBs). With very little experimental information known on many of the reactions within the αp-process, stellar rates are calculated using a statistical model, such as Hauser-Feshbach. Questions on the applicability of a Hauser-Feshbach model for the 34Ar (α,p) 37K reaction arise due to level density considerations in the compound nucleus, 38Ca . We have performed high energy-resolution forward-angle 40Ca (p,t) 38Ca measurements with the K = 600 spectrograph at iThemba LABS in order to identify levels above the α-threshold in 38Ca . States identified in this work were then used to determine the 34Ar (α,p) 37K reaction rate based on a narrow-resonance formalism. Comparisons are made to two standard Hauser-Feshbach model predicted rates at XRB temperatures.},

  doi          = {10.1103/PhysRevC.95.055803},

  journal      = {Physical Review C},

  number       = 5,

  volume       = 95,

  place        = {United States},

  year         = {Wed May 10 00:00:00 EDT 2017},

  month        = {Wed May 10 00:00:00 EDT 2017}

}

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Works referenced in this record:

The ¹⁵ O(α,γ) ¹⁹ Ne Reaction Rate and the Stability of Thermonuclear Burning on Accreting Neutron Stars
journal, August 2007

Fisker, Jacob Lund; Tan, Wanpeng; Gorres, Joachim
The Astrophysical Journal, Vol. 665, Issue 1
DOI: 10.1086/519517

High-precision ( $p$ , $t$ ) reaction to determine ${}^{25}{Al}$ ( $p, γ$ ) ${}^{26}{Si}$ reaction rates
journal, August 2010

Matic, A.; van den Berg, A. M.; Harakeh, M. N.
Physical Review C, Vol. 82, Issue 2
DOI: 10.1103/PhysRevC.82.025807

Astrophysical Reaction Rates From Statistical Model Calculations
journal, May 2000

Rauscher, Thomas; Thielemann, Friedrich-Karl
Atomic Data and Nuclear Data Tables, Vol. 75, Issue 1-2
DOI: 10.1006/adnd.2000.0834

Alpha-particle spectroscopic strengths using the ( $p, p α$ ) reaction at 101.5 MeV
journal, April 1984

Carey, T. A.; Roos, P. G.; Chant, N. S.
Physical Review C, Vol. 29, Issue 4
DOI: 10.1103/PhysRevC.29.1273

End Point of the $rp$ Process on Accreting Neutron Stars
journal, April 2001

Schatz, H.; Aprahamian, A.; Barnard, V.
Physical Review Letters, Vol. 86, Issue 16
DOI: 10.1103/PhysRevLett.86.3471

( $p, t$ ) Reaction on Even-Even $N = Z$ Nuclei in the $2 s 1 d$ Shell
journal, February 1972

Paddock, R. A.
Physical Review C, Vol. 5, Issue 2
DOI: 10.1103/PhysRevC.5.485

(6Li, d) reactions on 24Mg and 26Mg at 73 MeV
journal, May 1983

Tanabe, T.; Haga, K.; Yasue, M.
Nuclear Physics A, Vol. 399, Issue 1
DOI: 10.1016/0375-9474(83)90606-1

Low-lying neutron $f p$ -shell intruder states in $^{27}$ Ne
journal, January 2012

Brown, S. M.; Catford, W. N.; Thomas, J. S.
Physical Review C, Vol. 85, Issue 1
DOI: 10.1103/PhysRevC.85.011302

Proton single-particle reduced widths for unbound states
journal, May 1997

Iliadis, C.
Nuclear Physics A, Vol. 618, Issue 1-2
DOI: 10.1016/S0375-9474(97)00065-1

Nuclear Physics of Stars
book, January 2015

Iliadis, Christian
Wiley-VCH
DOI: 10.1002/9783527692668

TALYS: Comprehensive Nuclear Reaction Modeling
conference, January 2005

Koning, A. J.
INTERNATIONAL CONFERENCE ON NUCLEAR DATA FOR SCIENCE AND TECHNOLOGY, AIP Conference Proceedings
DOI: 10.1063/1.1945212

High-precision $^{28}$ Si( $p$ , $t$ ) $^{26}$ Si reaction to determine $^{22}$ Mg( $α$ , $p$ ) $^{25}$ Al reaction rates
journal, August 2011

Matic, A.; van den Berg, A. M.; Harakeh, M. N.
Physical Review C, Vol. 84, Issue 2
DOI: 10.1103/PhysRevC.84.025801

Realization of matching conditions for high-resolution spectrometers
journal, May 2002

Fujita, H.; Fujita, Y.; Berg, G. P. A.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 484, Issue 1-3
DOI: 10.1016/S0168-9002(01)01970-2

Level structure of $^{30}$ S and its importance in the $^{26}$ Si( $α$ , $p$ ) $^{29}$ P and $^{29}$ P( $p$ , $γ$ ) $^{30}$ S reaction rates
journal, December 2012

Almaraz-Calderon, S.; Tan, W. P.; Aprahamian, A.
Physical Review C, Vol. 86, Issue 6
DOI: 10.1103/PhysRevC.86.065805

Systematics of Ground-State $α$ -Particle Spectroscopic Strengths for $sd$ - and $fp$ -Shell Nuclei
journal, October 1975

Anantaraman, N.; Bennett, C. L.; Draayer, J. P.
Physical Review Letters, Vol. 35, Issue 17
DOI: 10.1103/PhysRevLett.35.1131

X-ray bursts and neutron-star thermonuclear flashes
journal, November 1977

Joss, P. C.
Nature, Vol. 270, Issue 5635
DOI: 10.1038/270310a0

Structure of 22Mg, 26Si, 34Ar and 38Ca via the (3He, n) reaction
journal, September 1986

Alford, W. P.; Craig, P.; Lind, D. A.
Nuclear Physics A, Vol. 457, Issue 2
DOI: 10.1016/0375-9474(86)90381-7

Matching of a beam line and a spectrometer New beam line project at RCNP
journal, April 1997

Fujita, Y.; Hatanaka, K.; Berg, G. P. A.
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 126, Issue 1-4
DOI: 10.1016/S0168-583X(96)01008-7

$sd$ -shell observables for the USDA and USDB Hamiltonians
journal, December 2008

Richter, W. A.; Mkhize, S.; Brown, B. Alex
Physical Review C, Vol. 78, Issue 6
DOI: 10.1103/PhysRevC.78.064302

Nuclear clustering using a modern shell model approach
journal, April 2015

Volya, Alexander; Tchuvil'sky, Yury M.
Physical Review C, Vol. 91, Issue 4
DOI: 10.1103/PhysRevC.91.044319

Tz = −1 nuclei in the rp-process — astrophysical implications and a new experimental approach
journal, July 1999

Schatz, H.; Bacher, A.; Berg, G. P. A.
Nuclear Physics A, Vol. 654, Issue 1
DOI: 10.1016/S0375-9474(00)88574-7

Explosive hydrogen burning
journal, January 1981

Wallace, R. K.; Woosley, S. E.
The Astrophysical Journal Supplement Series, Vol. 45
DOI: 10.1086/190717

A Composite Nuclear-Level Density Formula with Shell Corrections
journal, August 1965

Gilbert, A.; Cameron, A. G. W.
Canadian Journal of Physics, Vol. 43, Issue 8
DOI: 10.1139/p65-139

Reaction rates and reaction sequences in the rp-process
journal, September 1994

van Wormer, L.; Goerres, J.; Iliadis, C.
The Astrophysical Journal, Vol. 432
DOI: 10.1086/174572

High-precision $(p, t)$ reaction measurement to determine ${}^{18}{Ne} (α, p) {}^{21}{Na}$ reaction rates
journal, November 2009

Matic, A.; Berg, A. M. van den; Harakeh, M. N.
Physical Review C, Vol. 80, Issue 5
DOI: 10.1103/PhysRevC.80.055804

Nuclear level density and the determination of thermonuclear rates for astrophysics
journal, September 1997

Rauscher, Thomas; Thielemann, Friedrich-Karl; Kratz, Karl-Ludwig
Physical Review C, Vol. 56, Issue 3
DOI: 10.1103/PhysRevC.56.1613

Reaction rate and Composition Dependence of the Stability of Thermonuclear Burning on Accreting Neutron Stars
journal, May 2014

Keek, L.; Cyburt, R. H.; Heger, A.
The Astrophysical Journal, Vol. 787, Issue 2
DOI: 10.1088/0004-637X/787/2/101

The Ame2012 atomic mass evaluation
journal, December 2012

Wang, M.; Audi, G.; Wapstra, A. H.
Chinese Physics C, Vol. 36, Issue 12
DOI: 10.1088/1674-1137/36/12/003

High energy-resolution zero-degree facility for light-ion scattering and reactions at iThemba LABS
journal, October 2011

Neveling, R.; Fujita, H.; Smit, F. D.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 654, Issue 1
DOI: 10.1016/j.nima.2011.06.077

Cluster structure in 40Ca via the α-transfer reaction
journal, June 1994

Yamaya, T.; Saitoh, M.; Fujiwara, M.
Nuclear Physics A, Vol. 573, Issue 1
DOI: 10.1016/0375-9474(94)90019-1

The Nuclear Reaction Waiting Points: ²² Mg, ²⁶ Si, ³⁰ S, and ³⁴ Ar and Bolometrically Double-peaked Type I X-Ray Bursts
journal, May 2004

Fisker, Jacob Lund; Thielemann, Friedrich-Karl; Wiescher, Michael
The Astrophysical Journal, Vol. 608, Issue 1
DOI: 10.1086/422215

Alpha-clustering systematics from the quasifree ( $p, p α$ ) knockout reaction
journal, January 1981

Carey, T. A.; Roos, P. G.; Chant, N. S.
Physical Review C, Vol. 23, Issue 1
DOI: 10.1103/PhysRevC.23.576

The 40Ca(p, t)38Ca reaction and configuration mixing
journal, January 1977

Kubono, S.; Kato, S.; Yasue, M.
Nuclear Physics A, Vol. 276, Issue 2
DOI: 10.1016/0375-9474(77)90379-7

Nuclear burning in accreting neutron stars and X-ray bursts
journal, February 1978

Lamb, D. Q.; Lamb, F. K.
The Astrophysical Journal, Vol. 220
DOI: 10.1086/155905

$α$ -nucleus potentials for the neutron-deficient p nuclei
journal, March 2000

Mohr, P.
Physical Review C, Vol. 61, Issue 4
DOI: 10.1103/PhysRevC.61.045802

Precise half-life measurements for the superallowed $β^{+}$ emitters ${}^{34}{Ar}$ and ${}^{34}{Cl}$
journal, November 2006

Iacob, V. E.; Hardy, J. C.; Brinkley, J. F.
Physical Review C, Vol. 74, Issue 5
DOI: 10.1103/PhysRevC.74.055502

γ-ray bursts from thermonuclear explosions on neutron stars
journal, September 1976

Woosley, S. E.; Taam, Ronald E.
Nature, Vol. 263, Issue 5573
DOI: 10.1038/263101a0

The Inelastic Scattering of Neutrons
journal, July 1952

Hauser, Walter; Feshbach, Herman
Physical Review, Vol. 87, Issue 2
DOI: 10.1103/PhysRev.87.366

First measurement of the $^{33}$ Cl( $p, α$ ) $^{30}$ S reaction
journal, October 2011

Deibel, C. M.; Rehm, K. E.; Figueira, J. M.
Physical Review C, Vol. 84, Issue 4
DOI: 10.1103/PhysRevC.84.045802

Effective interactions for the 0 p 1 s 0 d nuclear shell-model space
journal, September 1992

Warburton, E. K.; Brown, B. A.
Physical Review C, Vol. 46, Issue 3
DOI: 10.1103/PhysRevC.46.923

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Title: Indirect study of the stellar Ar 34 ( α , p ) K 37 reaction rate through Ca 40 ( p , t ) Ca 38 reaction measurements

Abstract

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Title: Indirect study of the stellar ${}^{34}{Ar} (α, p) {}^{37}K$ reaction rate through ${}^{40}{Ca} (p, t) {}^{38}{Ca}$ reaction measurements

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Systematics of Ground-State $α$ -Particle Spectroscopic Strengths for $sd$ - and $fp$ -Shell Nuclei
journal, October 1975

X-ray bursts and neutron-star thermonuclear flashes
journal, November 1977

Structure of 22Mg, 26Si, 34Ar and 38Ca via the (3He, n) reaction
journal, September 1986

Matching of a beam line and a spectrometer New beam line project at RCNP
journal, April 1997

$sd$ -shell observables for the USDA and USDB Hamiltonians
journal, December 2008

Nuclear clustering using a modern shell model approach
journal, April 2015

Tz = −1 nuclei in the rp-process — astrophysical implications and a new experimental approach
journal, July 1999

Explosive hydrogen burning
journal, January 1981

A Composite Nuclear-Level Density Formula with Shell Corrections
journal, August 1965

Reaction rates and reaction sequences in the rp-process
journal, September 1994

High-precision $(p, t)$ reaction measurement to determine ${}^{18}{Ne} (α, p) {}^{21}{Na}$ reaction rates
journal, November 2009

Nuclear level density and the determination of thermonuclear rates for astrophysics
journal, September 1997

Reaction rate and Composition Dependence of the Stability of Thermonuclear Burning on Accreting Neutron Stars
journal, May 2014

The Ame2012 atomic mass evaluation
journal, December 2012

High energy-resolution zero-degree facility for light-ion scattering and reactions at iThemba LABS
journal, October 2011

Cluster structure in 40Ca via the α-transfer reaction
journal, June 1994

The Nuclear Reaction Waiting Points: ²² Mg, ²⁶ Si, ³⁰ S, and ³⁴ Ar and Bolometrically Double-peaked Type I X-Ray Bursts
journal, May 2004

Alpha-clustering systematics from the quasifree ( $p, p α$ ) knockout reaction
journal, January 1981

The 40Ca(p, t)38Ca reaction and configuration mixing
journal, January 1977

Nuclear burning in accreting neutron stars and X-ray bursts
journal, February 1978

$α$ -nucleus potentials for the neutron-deficient p nuclei
journal, March 2000

Precise half-life measurements for the superallowed $β^{+}$ emitters ${}^{34}{Ar}$ and ${}^{34}{Cl}$
journal, November 2006

γ-ray bursts from thermonuclear explosions on neutron stars
journal, September 1976

The Inelastic Scattering of Neutrons
journal, July 1952

First measurement of the $^{33}$ Cl( $p, α$ ) $^{30}$ S reaction
journal, October 2011

Effective interactions for the 0 p 1 s 0 d nuclear shell-model space
journal, September 1992