Перейти к основному содержанию
AkademIndex

Продукты

Для разработчиков

AkademBaseОткрытый API экосистемы
Статья

<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mo>(</mml:mo><mml:mi>d</mml:mi><mml:mo>,</mml:mo><mml:mi>n</mml:mi><mml:mo>)</mml:mo></mml:mrow></mml:math> proton-transfer reactions on <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi>Be</mml:mi><mml:mprescripts/><mml:none/><mml:mn>9</mml:mn></mml:mmultiscripts><mml:mo>,</mml:mo><mml:mo> </mml:mo><mml:mmultiscripts><mml:mi mathvariant="normal">B</mml:mi><mml:mprescripts/><mml:none/><mml:mn>11</mml:mn></mml:mmultiscripts><mml:mo>,</mml:mo><mml:mo> </mml:mo><mml:mmultiscripts><mml:mi mathvariant="normal">C</mml:mi><mml:mprescripts/><mml:none/><mml:mn>13</mml:mn></mml:mmultiscripts><mml:mo>,</mml:mo><mml:mo> </mml:mo><mml:mmultiscripts><mml:mi mathvariant="normal">N</mml:mi><mml:mprescripts/><mml:none/><mml:mrow><mml:mn>14</mml:mn><mml:mo>,</mml:mo><mml:mn>15</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>, and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">F</mml:mi><mml:mprescripts/><mml:none/><mml:mn>19</mml:mn></mml:mmultiscripts></mml:math> and spectroscopic factors at <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:msub><mml:mi>E</mml:mi><mml:mi>d</mml:mi></mml:msub><mml:mo>=</mml:mo><mml:mn>16</mml:mn><mml:mspace width="0.16em"/><mml:mi>MeV</mml:mi></mml:mrow></mml:math>

M. FebbraroPhysics Department, University of Michigan, Ann Arbor, Michigan 48109, USAF.D. BecchettiPhysics Department, University of Michigan, Ann Arbor, Michigan 48109, USAR. O. Torres-IseaPhysics Department, University of Michigan, Ann Arbor, Michigan 48109, USAJ. RigginsPhysics Department, University of Michigan, Ann Arbor, Michigan 48109, USAChristopher LawrencePhysics Department, University of Michigan, Ann Arbor, Michigan 48109, USAJ. J. KolataPhysics Department, University of Michigan, Ann Arbor, Michigan 48109, USAA. HowardPhysics Department, University of Michigan, Ann Arbor, Michigan 48109, USA
2017lv
ABI

Аннотация

The $(d,n)$ reaction has been studied with targets of $^{9}\mathrm{Be}, ^{11}\mathrm{B}, ^{13}\mathrm{C}, ^{14,15}\mathrm{N}$, and $^{19}\mathrm{F}$ at ${E}_{d}=16\phantom{\rule{0.16em}{0ex}}\mathrm{MeV}$ using a deuterated liquid-scintillator array. Advanced spectral unfolding techniques with accurately measured scintillator response functions were employed to extract neutron energy spectra without the need for long-path neutron time-of-flight. An analysis of the proton-transfer data at forward angles to the ground states of the final nuclei, using finite-range distorted-wave Born approximation analysis with common bound-state, global, and local optical-model parameter sets, yields a set of self-consistent spectroscopic factors. These are compared with the results of several previous time-of-flight measurements, most done many years ago for individual nuclei at lower energy and often analyzed using zero-range transfer codes. In contrast to some of the earlier published data, our data generally compare well with simple shell-model predictions, with little evidence for uniform quenching (reduction from shell-model values) that has previously been reported from analysis of nucleon knock-out reactions. Data for low-lying excited states in $^{14}\mathrm{N}$ from $^{13}\mathrm{C}(d,n)$ also is analyzed and spectroscopic information relevant to nuclear astrophysics obtained. A preliminary study of the radioactive ion beam induced reaction $^{7}\mathrm{Be}(d,n), E(^{7}\mathrm{Be})=30\phantom{\rule{0.16em}{0ex}}\mathrm{MeV}$ was carried out and indicates further improvements are needed for such measurements, which require detection of neutrons with ${E}_{n}&lt;2\phantom{\rule{0.16em}{0ex}}\mathrm{MeV}$.

Перевод пока недоступен

Идентификаторы

Цитирования и источники

Цитирований: 2Использованных источников: 0