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

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

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

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/Territory	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, California, United States. http://adsabs.harvard.edu/abs/2008APS..DNP.MG009M

@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>

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 -

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

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