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Title: Study of the Al m 26 ( d , p ) Al 27 Reaction and the Influence of the Al 26 0 + Isomer on the Destruction of Al 26 in the Galaxy

Journal Article · · Physical Review Letters
 [1];  [2];  [1];  [2];  [2];  [2];  [2];  [2];  [3];  [4];  [2];  [1];  [2];  [2];  [5];  [2];  [2];  [6];  [2];  [2]
  1. Florida State Univ., Tallahassee, FL (United States). Dept. of Physics
  2. Argonne National Lab. (ANL), Argonne, IL (United States). Physics Division
  3. McMaster Univ., Hamilton, ON (Canada). Dept. of Physics and Astronomy
  4. Louisiana State Univ., Baton Rouge, LA (United States). Dept. of Physics and Astronomy
  5. Univ. of Connecticut, Storrs, CT (United States). Dept. of Physics
  6. Louisiana State Univ., Baton Rouge, LA (United States). Dept. of Physics and Astronomy; Argonne National Lab. (ANL), Argonne, IL (United States). Physics Division

The existence of 26Al (t1/2 = 7.17 × 105 yr) in the interstellar medium provides a direct confirmation of ongoing nucleosynthesis in the Galaxy. The presence of a low-lying 0+ isomer (26Alm), however, severely complicates the astrophysical calculations. Here we present for the first time a study of the 26Alm (d, p)27 Al reaction using an isomeric 26Al beam. The selectivity of this reaction allowed the study of ℓ = 0 transfers to T = 1/2, and T = 3/2 states in 27Al . Mirror symmetry arguments were then used to constrain the 26Al m (p,γ) 27Si reaction rate and provide an experimentally determined upper limit of the rate for the destruction of isomeric 26Al via radiative proton capture reactions, which is expected to dominate the destruction path of 26Alm in asymptotic giant branch stars, classical novae, and core collapse supernovae.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Grant/Contract Number:
AC02-06CH11357; FG02-96ER40978
OSTI ID:
1394547
Alternate ID(s):
OSTI ID: 1375518
Journal Information:
Physical Review Letters, Vol. 119, Issue 7; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 16 works
Citation information provided by
Web of Science

References (45)

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