Experimental studies of B10(d,n)C11.
An experimental study of the low lying excited states of C¹¹ has been made using the B¹⁰(d ,nɣ )C¹¹ reaction at a deuteron bombarding energy of 0.8 Mev. Measurements were made of the n- ɣangular correlations of the ground state gamma transitions from the 6.49 and 4.32 Mev levels, and of the gamma ra...
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ndltd-UBC-oai-circle.library.ubc.ca-2429-389422018-01-05T17:49:26Z Experimental studies of B10(d,n)C11. Rupaal, Ajit Singh Boron -- Isotopes Carbon -- Isotopes Gamma rays An experimental study of the low lying excited states of C¹¹ has been made using the B¹⁰(d ,nɣ )C¹¹ reaction at a deuteron bombarding energy of 0.8 Mev. Measurements were made of the n- ɣangular correlations of the ground state gamma transitions from the 6.49 and 4.32 Mev levels, and of the gamma ray branching ratios of the 6.49, 4.81 and 4.32 Mev levels. The apparatus used for the measurements was a combination of a NaI(T1) gamma ray spectrometer and an improved fast neutron time-of-flight spectrometer, developed by the author. Theoretical analysis of the n-ɣ angular correlations showed that the 6.49 Mev and 4.32 Mev levels are formed by the capture of p½ protons This restricts the Jπ values of these levels to (5/2)¯ or (7/2)¯. The parities of the states observed in this experiment are all known to be negative from the high energy stripping data of Cerineo and Maslin et al. A comparison of the experimental branching ratios with the theoretical branching ratios predicted by the intermediate coupling shell model is consistent with the following spin and parity assignments in C¹¹ : g.s. (3/2)¯, 2.00 Mev (1/2)¯, 4.32 Mev (5/2)¯, 4.81 Mev (3/2*)¯ and 6.49 Mev (7/2)¯. These assignments are in agreement with other recent results. The correspondence of these levels in C¹¹ with those of B¹¹ is consistent with the hypothesis of the charge independence of nuclear forces. The experimental results agree in some cases and disagree in others with the intermediate coupling shell model calculations of Kurath. Science, Faculty of Physics and Astronomy, Department of Graduate 2011-11-10T21:21:19Z 2011-11-10T21:21:19Z 1963 Text Thesis/Dissertation http://hdl.handle.net/2429/38942 eng For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. University of British Columbia |
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English |
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Boron -- Isotopes Carbon -- Isotopes Gamma rays |
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Boron -- Isotopes Carbon -- Isotopes Gamma rays Rupaal, Ajit Singh Experimental studies of B10(d,n)C11. |
description |
An experimental study of the low lying excited states of C¹¹ has been made using the B¹⁰(d ,nɣ )C¹¹ reaction at a deuteron bombarding energy of 0.8 Mev. Measurements were made of the n- ɣangular correlations of the ground state gamma transitions from the 6.49 and 4.32 Mev levels, and of the gamma ray branching ratios of the 6.49, 4.81 and 4.32 Mev levels. The apparatus used for the measurements was a combination of a NaI(T1) gamma ray spectrometer and an improved fast neutron time-of-flight spectrometer, developed by the author.
Theoretical analysis of the n-ɣ angular correlations showed that the 6.49 Mev and 4.32 Mev levels are formed by the capture of p½ protons
This restricts the Jπ values of these levels to (5/2)¯ or (7/2)¯. The parities of the states observed in this experiment are all known to be negative from the high energy stripping data of Cerineo and Maslin et al. A comparison of the experimental branching ratios with the theoretical branching ratios predicted by the intermediate coupling shell model is consistent with the following spin and parity assignments in C¹¹ : g.s. (3/2)¯, 2.00 Mev (1/2)¯, 4.32 Mev (5/2)¯, 4.81 Mev (3/2*)¯ and 6.49 Mev (7/2)¯. These assignments are in agreement with other recent results.
The correspondence of these levels in C¹¹ with those of B¹¹ is consistent with the hypothesis of the charge independence of nuclear forces. The experimental results agree in some cases and disagree in others with the intermediate coupling shell model calculations of Kurath. === Science, Faculty of === Physics and Astronomy, Department of === Graduate |
author |
Rupaal, Ajit Singh |
author_facet |
Rupaal, Ajit Singh |
author_sort |
Rupaal, Ajit Singh |
title |
Experimental studies of B10(d,n)C11. |
title_short |
Experimental studies of B10(d,n)C11. |
title_full |
Experimental studies of B10(d,n)C11. |
title_fullStr |
Experimental studies of B10(d,n)C11. |
title_full_unstemmed |
Experimental studies of B10(d,n)C11. |
title_sort |
experimental studies of b10(d,n)c11. |
publisher |
University of British Columbia |
publishDate |
2011 |
url |
http://hdl.handle.net/2429/38942 |
work_keys_str_mv |
AT rupaalajitsingh experimentalstudiesofb10dnc11 |
_version_ |
1718596282848641024 |