The SEI factor of the 12C(α,γ) 16O reaction and the 16N β-delayed α decay

Xiaodong Tang; K. E. Rehm; I. Ahmad; C. R. Brune; A. Champagne; J. P. Greene; A. A. Hecht; D. Henderson; R. V.F. Janssens; C. L. Jiang; L. Jisonna; D. Kahl; E. F. Moore; M. Notani; R. C. Pardo; N. Patel; M. Paul; G. Savard; J. P. Schiffer; R. E. Segel; S. Sinha; B. Shumard; A. H. Wuosmaa

doi:10.1063/1.2870303

The S_EI factor of the ¹²C(α,γ) ¹⁶O reaction and the ¹⁶N β-delayed α decay

Xiaodong Tang^*, K. E. Rehm, I. Ahmad, C. R. Brune, A. Champagne, J. P. Greene, A. A. Hecht, D. Henderson, R. V.F. Janssens, C. L. Jiang, L. Jisonna, D. Kahl, E. F. Moore, M. Notani, R. C. Pardo, N. Patel, M. Paul, G. Savard, J. P. Schiffer, R. E. SegelS. Sinha, B. Shumard, A. H. Wuosmaa

^*Corresponding author for this work

Racah Institute of Physics

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

Abstract

The ¹²C(α,γ)¹⁶O reaction is of great importance for the understanding the nuclear synthesis and explosion mechanism of the supernova. The cross section at the relevant stellar burning energies, around 300 keV, is dominated by the sub-threshold resonances. The ¹⁶β- delayed α decay data provide the most sensitive constrain on this sub-threshold resonance. Using twin-ionization chambers, we have measured the a particles and ¹²C recoil nuclei in coincidence. The spectrum has been fitted together with the published ¹²C(α, γ)¹⁶O data and the elastic scattering phase shift data using R-matrix. The S_EI factor at 300 keV has been determined as73±21keVb.

Original language	English
Title of host publication	Exotic Nuclei and Nuclear/Particle Astrophysics (II) - Proceedings of the Carpathian Summer School of Physics 2007, CSSP07
Pages	261-269
Number of pages	9
DOIs	https://doi.org/10.1063/1.2870303
State	Published - 2008
Event	Carpathian Summer School of Physics 2007, CSSP07 - Sinaia, Romania Duration: 20 Aug 2007 → 31 Aug 2007

Publication series

Name	AIP Conference Proceedings
Volume	972
ISSN (Print)	0094-243X
ISSN (Electronic)	1551-7616

Conference

Conference	Carpathian Summer School of Physics 2007, CSSP07
Country/Territory	Romania
City	Sinaia
Period	20/08/07 → 31/08/07

Keywords

N β-delayed α decay
S factor
The C(α, γ)O reaction

Access to Document

10.1063/1.2870303

Cite this

Tang, X., Rehm, K. E., Ahmad, I., Brune, C. R., Champagne, A., Greene, J. P., Hecht, A. A., Henderson, D., Janssens, R. V. F., Jiang, C. L., Jisonna, L., Kahl, D., Moore, E. F., Notani, M., Pardo, R. C., Patel, N., Paul, M., Savard, G., Schiffer, J. P., ... Wuosmaa, A. H. (2008). The S_EI factor of the ¹²C(α,γ) ¹⁶O reaction and the ¹⁶N β-delayed α decay. In Exotic Nuclei and Nuclear/Particle Astrophysics (II) - Proceedings of the Carpathian Summer School of Physics 2007, CSSP07 (pp. 261-269). (AIP Conference Proceedings; Vol. 972). https://doi.org/10.1063/1.2870303

@inproceedings{7f4da34aec074d4eb3ec71e56631168d,

title = "The SEI factor of the 12C(α,γ) 16O reaction and the 16N β-delayed α decay",

abstract = "The 12C(α,γ)16O reaction is of great importance for the understanding the nuclear synthesis and explosion mechanism of the supernova. The cross section at the relevant stellar burning energies, around 300 keV, is dominated by the sub-threshold resonances. The 16β- delayed α decay data provide the most sensitive constrain on this sub-threshold resonance. Using twin-ionization chambers, we have measured the a particles and 12C recoil nuclei in coincidence. The spectrum has been fitted together with the published 12C(α, γ)16O data and the elastic scattering phase shift data using R-matrix. The SEI factor at 300 keV has been determined as73±21keVb.",

keywords = "N β-delayed α decay, S factor, The C(α, γ)O reaction",

author = "Xiaodong Tang and Rehm, {K. E.} and I. Ahmad and Brune, {C. R.} and A. Champagne and Greene, {J. P.} and Hecht, {A. A.} and D. Henderson and Janssens, {R. V.F.} and Jiang, {C. L.} and L. Jisonna and D. Kahl and Moore, {E. F.} and M. Notani and Pardo, {R. C.} and N. Patel and M. Paul and G. Savard and Schiffer, {J. P.} and Segel, {R. E.} and S. Sinha and B. Shumard and Wuosmaa, {A. H.}",

year = "2008",

doi = "10.1063/1.2870303",

language = "אנגלית",

isbn = "9780735404908",

series = "AIP Conference Proceedings",

pages = "261--269",

booktitle = "Exotic Nuclei and Nuclear/Particle Astrophysics (II) - Proceedings of the Carpathian Summer School of Physics 2007, CSSP07",

note = "Carpathian Summer School of Physics 2007, CSSP07 ; Conference date: 20-08-2007 Through 31-08-2007",

}

Tang, X, Rehm, KE, Ahmad, I, Brune, CR, Champagne, A, Greene, JP, Hecht, AA, Henderson, D, Janssens, RVF, Jiang, CL, Jisonna, L, Kahl, D, Moore, EF, Notani, M, Pardo, RC, Patel, N, Paul, M, Savard, G, Schiffer, JP, Segel, RE, Sinha, S, Shumard, B & Wuosmaa, AH 2008, The S_EI factor of the ¹²C(α,γ) ¹⁶O reaction and the ¹⁶N β-delayed α decay. in Exotic Nuclei and Nuclear/Particle Astrophysics (II) - Proceedings of the Carpathian Summer School of Physics 2007, CSSP07. AIP Conference Proceedings, vol. 972, pp. 261-269, Carpathian Summer School of Physics 2007, CSSP07, Sinaia, Romania, 20/08/07. https://doi.org/10.1063/1.2870303

The S_EI factor of the ¹²C(α,γ) ¹⁶O reaction and the ¹⁶N β-delayed α decay. / Tang, Xiaodong; Rehm, K. E.; Ahmad, I. et al.
Exotic Nuclei and Nuclear/Particle Astrophysics (II) - Proceedings of the Carpathian Summer School of Physics 2007, CSSP07. 2008. p. 261-269 (AIP Conference Proceedings; Vol. 972).

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

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T1 - The SEI factor of the 12C(α,γ) 16O reaction and the 16N β-delayed α decay

AU - Tang, Xiaodong

AU - Rehm, K. E.

AU - Ahmad, I.

AU - Brune, C. R.

AU - Champagne, A.

AU - Greene, J. P.

AU - Hecht, A. A.

AU - Henderson, D.

AU - Janssens, R. V.F.

AU - Jiang, C. L.

AU - Jisonna, L.

AU - Kahl, D.

AU - Moore, E. F.

AU - Notani, M.

AU - Pardo, R. C.

AU - Patel, N.

AU - Paul, M.

AU - Savard, G.

AU - Schiffer, J. P.

AU - Segel, R. E.

AU - Sinha, S.

AU - Shumard, B.

AU - Wuosmaa, A. H.

PY - 2008

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AB - The 12C(α,γ)16O reaction is of great importance for the understanding the nuclear synthesis and explosion mechanism of the supernova. The cross section at the relevant stellar burning energies, around 300 keV, is dominated by the sub-threshold resonances. The 16β- delayed α decay data provide the most sensitive constrain on this sub-threshold resonance. Using twin-ionization chambers, we have measured the a particles and 12C recoil nuclei in coincidence. The spectrum has been fitted together with the published 12C(α, γ)16O data and the elastic scattering phase shift data using R-matrix. The SEI factor at 300 keV has been determined as73±21keVb.

KW - N β-delayed α decay

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