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Abstract
The <SUP>9</SUP>Be(<SUP>6</SUP>Li, <I>d</I>)<SUP>13</SUP>C* reaction
at a beam energy of 42 MeV has been investigated using a large-acceptance
silicon-strip detector array and the high-resolution Q3D magnetic spectrograph.
The Q3D facilitated the unambiguous determination of the reaction channel via
identification of the deuteron ejectile, thereby providing the spectrum
of excited states in <SUP>13</SUP>C in the range from 10.7 to 15.0 MeV.
The silicon array was used to detect and identify the <SUP>13</SUP>C
recoil-breakup products with efficiencies of up to 49%. The results obtained
for the absolute partial branching ratios represent the first complete
measurements for states in this energy region and allow the extraction of
reduced widths. The quantities measured for
Γ<SUB>n0</SUB>/Γ<SUB>tot</SUB> and
Γ<SUB>n1</SUB>/Γ<SUB>tot</SUB> are
0.91±0.11 and ≤0.13 (10.753 MeV),
0.51±0.04 and 0.51±0.04 (10.818 MeV),
0.68±0.03 and 0.42±0.02 (10.996 MeV),
0.49±0.08 and 0.71±0.11 (11.848 MeV), and
0.49±0.08 and 0.53±0.08 (12.130 MeV), respectively.
For the two observed higher-lying energy levels,
Γ<SUB>α0</SUB>/Γ<SUB>tot</SUB> and
Γ<SUB>n1</SUB>/Γ<SUB>tot</SUB> have been measured
as 0.54±0.02 and 0.45±0.02 (13.760 MeV) and
0.94±0.03 and 0.13±0.02 (14.582 MeV), respectively.
The consequences for the proposed molecular structures in <SUP>13</SUP>C
are explored following the extraction of reduced widths.
at a beam energy of 42 MeV has been investigated using a large-acceptance
silicon-strip detector array and the high-resolution Q3D magnetic spectrograph.
The Q3D facilitated the unambiguous determination of the reaction channel via
identification of the deuteron ejectile, thereby providing the spectrum
of excited states in <SUP>13</SUP>C in the range from 10.7 to 15.0 MeV.
The silicon array was used to detect and identify the <SUP>13</SUP>C
recoil-breakup products with efficiencies of up to 49%. The results obtained
for the absolute partial branching ratios represent the first complete
measurements for states in this energy region and allow the extraction of
reduced widths. The quantities measured for
Γ<SUB>n0</SUB>/Γ<SUB>tot</SUB> and
Γ<SUB>n1</SUB>/Γ<SUB>tot</SUB> are
0.91±0.11 and ≤0.13 (10.753 MeV),
0.51±0.04 and 0.51±0.04 (10.818 MeV),
0.68±0.03 and 0.42±0.02 (10.996 MeV),
0.49±0.08 and 0.71±0.11 (11.848 MeV), and
0.49±0.08 and 0.53±0.08 (12.130 MeV), respectively.
For the two observed higher-lying energy levels,
Γ<SUB>α0</SUB>/Γ<SUB>tot</SUB> and
Γ<SUB>n1</SUB>/Γ<SUB>tot</SUB> have been measured
as 0.54±0.02 and 0.45±0.02 (13.760 MeV) and
0.94±0.03 and 0.13±0.02 (14.582 MeV), respectively.
The consequences for the proposed molecular structures in <SUP>13</SUP>C
are explored following the extraction of reduced widths.
Original language | English |
---|---|
Article number | 044328 |
Pages (from-to) | 1-8 |
Number of pages | 8 |
Journal | Physical Review C |
Volume | 86 |
DOIs | |
Publication status | Published - 2012 |
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Dive into the research topics of 'Absolute partial decay-branch measurements in 13C'. Together they form a unique fingerprint.Projects
- 2 Finished
-
Birmingham Nuclear Physics Consolidated Grant
Freer, M. (Principal Investigator), Evans, P. (Co-Investigator), Jones, P. (Co-Investigator), Wheldon, C. (Co-Investigator) & Lazzeroni, C. (Co-Investigator)
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/08/11 → 31/07/14
Project: Research Councils
-
Advanced Fellowship - Dr Carl Wheldon
Wheldon, C. (Principal Investigator)
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
29/10/07 → 28/10/12
Project: Research