β-delayed proton decay of proton-rich nuclei 23Al and 31Cl and explosive H-burning in classical novae

L. Trache; A. Banu; J. C. Hardy; V. E. Iacob; M. McCleskey; E. Simmons; G. Tabacaru; R. E. Tribble; J. Aysto; A. Jokinen; A. Saastamoinen; M. A. Bentley; D. Jenkins; T. Davinson; P. J. Woods; N. L. Achouri; B. Roeder

β-delayed proton decay of proton-rich nuclei ²³Al and ³¹Cl and explosive H-burning in classical novae

L. Trache, A. Banu, J. C. Hardy, V. E. Iacob, M. McCleskey, E. Simmons, G. Tabacaru, R. E. Tribble, J. Aysto, A. Jokinen, A. Saastamoinen, M. A. Bentley, D. Jenkins, T. Davinson, P. J. Woods, N. L. Achouri, B. Roeder

Research output: Contribution to journal › Conference article › peer-review

Abstract

We have developed a technique to measure beta-delayed proton decay of proton-rich nuclei produced and separated with the MARS recoil spectrometer of Texas A&M University. The short-lived radioactive species are produced in-flight, separated, then slowed down (from about 40 MeV/u) and implanted in the middle of very thin Si detectors. The beam is pulsed and βp decay of the pure sources collected in beam is measured between beam pulses. Implantation avoids the problems with detector windows and allows us to measure protons with energies as low as 200 keV from nuclei with lifetimes of 100 ms or less. Using this technique, we have studied the isotopes ²³Al and ³¹Cl, both important for understanding explosive H-burning in novae. They were produced in the reactions ²⁴Mg(p,2n)²³Al and ³²S(p,2n)³¹Cl, respectively, in inverse kinematics, from stable beams at 48 and 40 MeV/u, respectively. We give details about the technique, its performances and the results for ²³Al and ³¹Cl βp-decay. The technique has shown a remarkable selectivity to β-delayed charged-particle emission and would work even at radioactive beam rates of a few pps. The states populated are resonances for the radiative proton capture reactions ²²Na(p,γ)²³Mg and ³⁰P(p,γ)³¹S, respectively.

Original language	English
Journal	Proceedings of Science
Publication status	Published - 1 Dec 2008
Event	10th Symposium on Nuclei in the Cosmos, NIC 2008 - Mackinac Island, MI, United States Duration: 27 Jul 2008 → 1 Aug 2008

Cite this

Trache, L., Banu, A., Hardy, J. C., Iacob, V. E., McCleskey, M., Simmons, E., Tabacaru, G., Tribble, R. E., Aysto, J., Jokinen, A., Saastamoinen, A., Bentley, M. A., Jenkins, D., Davinson, T., Woods, P. J., Achouri, N. L., & Roeder, B. (2008). β-delayed proton decay of proton-rich nuclei ²³Al and ³¹Cl and explosive H-burning in classical novae. Proceedings of Science.

@article{df979c47899b4621b225db1664835356,

title = "β-delayed proton decay of proton-rich nuclei 23Al and 31Cl and explosive H-burning in classical novae",

abstract = "We have developed a technique to measure beta-delayed proton decay of proton-rich nuclei produced and separated with the MARS recoil spectrometer of Texas A&M University. The short-lived radioactive species are produced in-flight, separated, then slowed down (from about 40 MeV/u) and implanted in the middle of very thin Si detectors. The beam is pulsed and βp decay of the pure sources collected in beam is measured between beam pulses. Implantation avoids the problems with detector windows and allows us to measure protons with energies as low as 200 keV from nuclei with lifetimes of 100 ms or less. Using this technique, we have studied the isotopes 23Al and 31Cl, both important for understanding explosive H-burning in novae. They were produced in the reactions 24Mg(p,2n)23Al and 32S(p,2n)31Cl, respectively, in inverse kinematics, from stable beams at 48 and 40 MeV/u, respectively. We give details about the technique, its performances and the results for 23Al and 31Cl βp-decay. The technique has shown a remarkable selectivity to β-delayed charged-particle emission and would work even at radioactive beam rates of a few pps. The states populated are resonances for the radiative proton capture reactions 22Na(p,γ)23Mg and 30P(p,γ)31S, respectively.",

author = "L. Trache and A. Banu and Hardy, {J. C.} and Iacob, {V. E.} and M. McCleskey and E. Simmons and G. Tabacaru and Tribble, {R. E.} and J. Aysto and A. Jokinen and A. Saastamoinen and Bentley, {M. A.} and D. Jenkins and T. Davinson and Woods, {P. J.} and Achouri, {N. L.} and B. Roeder",

year = "2008",

month = dec,

day = "1",

language = "English",

journal = "Proceedings of Science",

issn = "1824-8039",

publisher = "Sissa Medialab Srl",

note = "10th Symposium on Nuclei in the Cosmos, NIC 2008 ; Conference date: 27-07-2008 Through 01-08-2008",

}

TY - JOUR

T1 - β-delayed proton decay of proton-rich nuclei 23Al and 31Cl and explosive H-burning in classical novae

AU - Trache, L.

AU - Banu, A.

AU - Hardy, J. C.

AU - Iacob, V. E.

AU - McCleskey, M.

AU - Simmons, E.

AU - Tabacaru, G.

AU - Tribble, R. E.

AU - Aysto, J.

AU - Jokinen, A.

AU - Saastamoinen, A.

AU - Bentley, M. A.

AU - Jenkins, D.

AU - Davinson, T.

AU - Woods, P. J.

AU - Achouri, N. L.

AU - Roeder, B.

PY - 2008/12/1

Y1 - 2008/12/1

N2 - We have developed a technique to measure beta-delayed proton decay of proton-rich nuclei produced and separated with the MARS recoil spectrometer of Texas A&M University. The short-lived radioactive species are produced in-flight, separated, then slowed down (from about 40 MeV/u) and implanted in the middle of very thin Si detectors. The beam is pulsed and βp decay of the pure sources collected in beam is measured between beam pulses. Implantation avoids the problems with detector windows and allows us to measure protons with energies as low as 200 keV from nuclei with lifetimes of 100 ms or less. Using this technique, we have studied the isotopes 23Al and 31Cl, both important for understanding explosive H-burning in novae. They were produced in the reactions 24Mg(p,2n)23Al and 32S(p,2n)31Cl, respectively, in inverse kinematics, from stable beams at 48 and 40 MeV/u, respectively. We give details about the technique, its performances and the results for 23Al and 31Cl βp-decay. The technique has shown a remarkable selectivity to β-delayed charged-particle emission and would work even at radioactive beam rates of a few pps. The states populated are resonances for the radiative proton capture reactions 22Na(p,γ)23Mg and 30P(p,γ)31S, respectively.

AB - We have developed a technique to measure beta-delayed proton decay of proton-rich nuclei produced and separated with the MARS recoil spectrometer of Texas A&M University. The short-lived radioactive species are produced in-flight, separated, then slowed down (from about 40 MeV/u) and implanted in the middle of very thin Si detectors. The beam is pulsed and βp decay of the pure sources collected in beam is measured between beam pulses. Implantation avoids the problems with detector windows and allows us to measure protons with energies as low as 200 keV from nuclei with lifetimes of 100 ms or less. Using this technique, we have studied the isotopes 23Al and 31Cl, both important for understanding explosive H-burning in novae. They were produced in the reactions 24Mg(p,2n)23Al and 32S(p,2n)31Cl, respectively, in inverse kinematics, from stable beams at 48 and 40 MeV/u, respectively. We give details about the technique, its performances and the results for 23Al and 31Cl βp-decay. The technique has shown a remarkable selectivity to β-delayed charged-particle emission and would work even at radioactive beam rates of a few pps. The states populated are resonances for the radiative proton capture reactions 22Na(p,γ)23Mg and 30P(p,γ)31S, respectively.

UR - http://www.scopus.com/inward/record.url?scp=84887313428&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:84887313428

SN - 1824-8039

JO - Proceedings of Science

JF - Proceedings of Science

T2 - 10th Symposium on Nuclei in the Cosmos, NIC 2008

Y2 - 27 July 2008 through 1 August 2008

ER -

β-delayed proton decay of proton-rich nuclei 23Al and 31Cl and explosive H-burning in classical novae

Abstract

Other files and links

Cite this

β-delayed proton decay of proton-rich nuclei ²³Al and ³¹Cl and explosive H-burning in classical novae