Measurement of Low Energy Resonances in ^31P(p,α)^28Si

B. H. Moazen; C. Matei; D. W. Bardayan; J. C. Blackmon; K. Y. Chae; K. A. Chipps; R. Hatarik; K. L. Grzywacz; R. W. Kapler; R. L. Kozub; M. Matos; C. D. Nesaraja; S. D. Pain; Timothy G Pelham; W. A. Peters; S. T. Pittman; J. F., Jr. Shriner; M. S. Smith

Abstract

The (p,α) reactions on T=1/2 nuclei like ^23Na, ^27Al, ^31P, and ^35Cl, and the competing (p,γ) reactions are important for understanding the reaction flow to heavier elements in the rp-process. Previous rate calculations of the ^31P(p,α)^28Si reaction were based on indirect information gained from studies of the ^31P(^3He,d)^28S reaction [1]. At ORNL, we measured the energy and strength of the 371 and 599 keV resonances in ^31P(p,α)^28Si using a technique previously employed for an ^17O(p,α)^14N study[2]. A beam of ^31P bombarded hydrogen gas which filled a large, differentially pumped scattering chamber at a pressure of 3 Torr. The alpha particle and ^28Si recoil were detected in coincidence and the reaction vertex was determined using the relative kinematics of the reaction products. The experimental setup and preliminary results will be presented. [1] Ross et al., Phys. Rev C 52, 1681 (1995) [2] B. H. Moazen et al., Phys. Rev. C 75, 065801 (2006) ORNL is managed by UT-Battelle for the US DOE

Original language	English
Pages	BAPS.2008.DNP.MG.9
Publication status	Published - 1 Oct 2008
Event	2008 Annual Meeting of the Division of Nuclear Physics, American Physical Society - Oakland, United States Duration: 23 Oct 2008 → 26 Oct 2008 http://meetings.aps.org/Meeting/DNP08/Content/1205

Conference

Conference	2008 Annual Meeting of the Division of Nuclear Physics, American Physical Society
Abbreviated title	DNP08 Meeting
Country	United States
City	Oakland
Period	23/10/08 → 26/10/08
Internet address	http://meetings.aps.org/Meeting/DNP08/Content/1205

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Moazen, B. H., Matei, C., Bardayan, D. W., Blackmon, J. C., Chae, K. Y., Chipps, K. A., Hatarik, R., Grzywacz, K. L., Kapler, R. W., Kozub, R. L., Matos, M., Nesaraja, C. D., Pain, S. D., Pelham, T. G., Peters, W. A., Pittman, S. T., Shriner, J. F. . J., & Smith, M. S. (2008). Measurement of Low Energy Resonances in ^31P(p,α)^28Si. BAPS.2008.DNP.MG.9. Abstract from 2008 Annual Meeting of the Division of Nuclear Physics, American Physical Society, Oakland, United States. http://adsabs.harvard.edu/abs/2008APS..DNP.MG009M

Moazen, B. H. ; Matei, C. ; Bardayan, D. W. ; Blackmon, J. C. ; Chae, K. Y. ; Chipps, K. A. ; Hatarik, R. ; Grzywacz, K. L. ; Kapler, R. W. ; Kozub, R. L. ; Matos, M. ; Nesaraja, C. D. ; Pain, S. D. ; Pelham, Timothy G ; Peters, W. A. ; Pittman, S. T. ; Shriner, J. F., Jr. ; Smith, M. S. / Measurement of Low Energy Resonances in ^31P(p,α)^28Si. Abstract from 2008 Annual Meeting of the Division of Nuclear Physics, American Physical Society, Oakland, United States.

@conference{48342c7024f3476b8e4d9789b586ac34,

title = "Measurement of Low Energy Resonances in ^31P(p,α)^28Si",

abstract = "The (p,α) reactions on T=1/2 nuclei like ^23Na, ^27Al, ^31P, and ^35Cl, and the competing (p,γ) reactions are important for understanding the reaction flow to heavier elements in the rp-process. Previous rate calculations of the ^31P(p,α)^28Si reaction were based on indirect information gained from studies of the ^31P(^3He,d)^28S reaction [1]. At ORNL, we measured the energy and strength of the 371 and 599 keV resonances in ^31P(p,α)^28Si using a technique previously employed for an ^17O(p,α)^14N study[2]. A beam of ^31P bombarded hydrogen gas which filled a large, differentially pumped scattering chamber at a pressure of 3 Torr. The alpha particle and ^28Si recoil were detected in coincidence and the reaction vertex was determined using the relative kinematics of the reaction products. The experimental setup and preliminary results will be presented. [1] Ross et al., Phys. Rev C 52, 1681 (1995) [2] B. H. Moazen et al., Phys. Rev. C 75, 065801 (2006) ORNL is managed by UT-Battelle for the US DOE",

author = "Moazen, {B. H.} and C. Matei and Bardayan, {D. W.} and Blackmon, {J. C.} and Chae, {K. Y.} and Chipps, {K. A.} and R. Hatarik and Grzywacz, {K. L.} and Kapler, {R. W.} and Kozub, {R. L.} and M. Matos and Nesaraja, {C. D.} and Pain, {S. D.} and Pelham, {Timothy G} and Peters, {W. A.} and Pittman, {S. T.} and Shriner, {J. F., Jr.} and Smith, {M. S.}",

year = "2008",

month = oct,

day = "1",

language = "English",

pages = "BAPS.2008.DNP.MG.9",

note = "2008 Annual Meeting of the Division of Nuclear Physics, American Physical Society, DNP08 Meeting ; Conference date: 23-10-2008 Through 26-10-2008",

url = "http://meetings.aps.org/Meeting/DNP08/Content/1205",

}

Moazen, BH, Matei, C, Bardayan, DW, Blackmon, JC, Chae, KY, Chipps, KA, Hatarik, R, Grzywacz, KL, Kapler, RW, Kozub, RL, Matos, M, Nesaraja, CD, Pain, SD, Pelham, TG, Peters, WA, Pittman, ST, Shriner, JFJ & Smith, MS 2008, 'Measurement of Low Energy Resonances in ^31P(p,α)^28Si', 2008 Annual Meeting of the Division of Nuclear Physics, American Physical Society, Oakland, United States, 23/10/08 - 26/10/08 pp. BAPS.2008.DNP.MG.9. <http://adsabs.harvard.edu/abs/2008APS..DNP.MG009M>

Measurement of Low Energy Resonances in ^31P(p,α)^28Si. / Moazen, B. H.; Matei, C.; Bardayan, D. W.; Blackmon, J. C.; Chae, K. Y.; Chipps, K. A.; Hatarik, R.; Grzywacz, K. L.; Kapler, R. W.; Kozub, R. L.; Matos, M.; Nesaraja, C. D.; Pain, S. D.; Pelham, Timothy G; Peters, W. A.; Pittman, S. T.; Shriner, J. F., Jr.; Smith, M. S.

2008. BAPS.2008.DNP.MG.9 Abstract from 2008 Annual Meeting of the Division of Nuclear Physics, American Physical Society, Oakland, United States.

Research output: Contribution to conference › Conference Abstract › peer-review

TY - CONF

T1 - Measurement of Low Energy Resonances in ^31P(p,α)^28Si

AU - Moazen, B. H.

AU - Matei, C.

AU - Bardayan, D. W.

AU - Blackmon, J. C.

AU - Chae, K. Y.

AU - Chipps, K. A.

AU - Hatarik, R.

AU - Grzywacz, K. L.

AU - Kapler, R. W.

AU - Kozub, R. L.

AU - Matos, M.

AU - Nesaraja, C. D.

AU - Pain, S. D.

AU - Pelham, Timothy G

AU - Peters, W. A.

AU - Pittman, S. T.

AU - Shriner, J. F., Jr.

AU - Smith, M. S.

PY - 2008/10/1

Y1 - 2008/10/1

N2 - The (p,α) reactions on T=1/2 nuclei like ^23Na, ^27Al, ^31P, and ^35Cl, and the competing (p,γ) reactions are important for understanding the reaction flow to heavier elements in the rp-process. Previous rate calculations of the ^31P(p,α)^28Si reaction were based on indirect information gained from studies of the ^31P(^3He,d)^28S reaction [1]. At ORNL, we measured the energy and strength of the 371 and 599 keV resonances in ^31P(p,α)^28Si using a technique previously employed for an ^17O(p,α)^14N study[2]. A beam of ^31P bombarded hydrogen gas which filled a large, differentially pumped scattering chamber at a pressure of 3 Torr. The alpha particle and ^28Si recoil were detected in coincidence and the reaction vertex was determined using the relative kinematics of the reaction products. The experimental setup and preliminary results will be presented. [1] Ross et al., Phys. Rev C 52, 1681 (1995) [2] B. H. Moazen et al., Phys. Rev. C 75, 065801 (2006) ORNL is managed by UT-Battelle for the US DOE

AB - The (p,α) reactions on T=1/2 nuclei like ^23Na, ^27Al, ^31P, and ^35Cl, and the competing (p,γ) reactions are important for understanding the reaction flow to heavier elements in the rp-process. Previous rate calculations of the ^31P(p,α)^28Si reaction were based on indirect information gained from studies of the ^31P(^3He,d)^28S reaction [1]. At ORNL, we measured the energy and strength of the 371 and 599 keV resonances in ^31P(p,α)^28Si using a technique previously employed for an ^17O(p,α)^14N study[2]. A beam of ^31P bombarded hydrogen gas which filled a large, differentially pumped scattering chamber at a pressure of 3 Torr. The alpha particle and ^28Si recoil were detected in coincidence and the reaction vertex was determined using the relative kinematics of the reaction products. The experimental setup and preliminary results will be presented. [1] Ross et al., Phys. Rev C 52, 1681 (1995) [2] B. H. Moazen et al., Phys. Rev. C 75, 065801 (2006) ORNL is managed by UT-Battelle for the US DOE

UR - http://meetings.aps.org/Meeting/DNP08/Session/MG.9

M3 - Conference Abstract

SP - BAPS.2008.DNP.MG.9

T2 - 2008 Annual Meeting of the Division of Nuclear Physics, American Physical Society

Y2 - 23 October 2008 through 26 October 2008

ER -