TY - JOUR
T1 - Nuclear astrophysics at ISAC with DRAGON
T2 - Initial studies
AU - Olin, Art
AU - Bishop, Shawn
AU - Buchmann, Lothar
AU - Chatterjee, Mohan L.
AU - Chen, Alan
AU - D'Auria, John M.
AU - Engel, Sabine
AU - Gigliott, Dario
AU - Greife, Uwe
AU - Hunter, Don
AU - Hussein, Ahmed
AU - Hutcheon, Dave
AU - Jewett, Cybele
AU - King, Jim
AU - Kubono, Shigeru
AU - Lamey, Michael
AU - Laird, Alison M.
AU - Lewis, Rachel
AU - Liu, Wenjie
AU - Michimasa, Shin'ichiro
AU - Ottewell, Dave
AU - Parker, Peter
AU - Rogers, Joel
AU - Strieder, Frank
AU - Wrede, Chris
N1 - Funding Information:
We wish to acknowledge the help of TRIUMF staff and operators, especially those at the ISAC facility. We are also thankful to all TRIUMF staff, too numerous to mention here, who helped in the construction of DRAGON. We wish to express our special thanks to M. Dombsky and P. Bricault for providing the radioactive 21Na beam and to B. Laxdal and M. Passini for considerable efforts with beam tuning. Major financial support from NSERC is highly appreciated.
PY - 2003/6/30
Y1 - 2003/6/30
N2 - The new DRAGON recoil separator facility, designed and built to measure directly the rates of radiative proton and alpha capture reactions important for nuclear astrophysics, is now in operation at the TRIUMF-ISAC radioactive beams facility in Vancouver, Canada. Experiments have been conducted for the first time on the 21Na(p,γ 22Mg reaction. The evolution of nova explosions, and particularly their 22Na abundance, depends sensitively on this reaction rate. Commissioning studies using the well-known stable beam reactions 21Ne(p,γ)22Na, 20Ne(p,γ)21Na, and 24Mg(p,γ 25 Al have shown that the recoil separator performs within its design specifications both in suppression power and acceptance. The first radioactive beam studies were done using a beam of 5 × l08 21Na atoms/s. Yield measurements recording simultaneously singles and coincident heavy-ion and gamma signals were performed, scanning in energy over the known resonance reported previously in 22Mg at Ecm, = 212 keV, and in addition, over a strong resonance observed at Ecm ≈822 keV.
AB - The new DRAGON recoil separator facility, designed and built to measure directly the rates of radiative proton and alpha capture reactions important for nuclear astrophysics, is now in operation at the TRIUMF-ISAC radioactive beams facility in Vancouver, Canada. Experiments have been conducted for the first time on the 21Na(p,γ 22Mg reaction. The evolution of nova explosions, and particularly their 22Na abundance, depends sensitively on this reaction rate. Commissioning studies using the well-known stable beam reactions 21Ne(p,γ)22Na, 20Ne(p,γ)21Na, and 24Mg(p,γ 25 Al have shown that the recoil separator performs within its design specifications both in suppression power and acceptance. The first radioactive beam studies were done using a beam of 5 × l08 21Na atoms/s. Yield measurements recording simultaneously singles and coincident heavy-ion and gamma signals were performed, scanning in energy over the known resonance reported previously in 22Mg at Ecm, = 212 keV, and in addition, over a strong resonance observed at Ecm ≈822 keV.
UR - https://www.scopus.com/pages/publications/0041880136
U2 - 10.1016/S0375-9474(03)01275-2
DO - 10.1016/S0375-9474(03)01275-2
M3 - Article
AN - SCOPUS:0041880136
SN - 0375-9474
VL - 721
SP - C1019-C1023
JO - Nuclear Physics, Section A
JF - Nuclear Physics, Section A
ER -