中国科学院机构知识库网格系统: 检索

A 3-D Neutron Distribution Reconstruction Method Based on the Off-Situ Measurement for Reactor 期刊论文 OAI收割
IEEE TRANSACTIONS ON NUCLEAR SCIENCE, 2021, 卷号: 68
作者: Cao, Pei; Cao, Chenglong; Gan, Quan

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收藏 | 浏览/下载：63/0 | 提交时间：2022/01/25

Neutrons Inductors Image reconstruction Detectors Convolution Three-dimensional displays Monitoring Core surveillance fully convolutional network (FCN)-based architecture neutron distribution off-situ measurement space- and energy-dependent 3-D neutron distribution

Determination method of high fluence rate for D-T neutron source with long counter 期刊论文 OAI收割
RADIATION MEASUREMENTS, 2021, 卷号: 148
作者: Li, Yanan; Li, Taosheng; Wang, Ying; Hong, Bing; Wang, Feipeng

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收藏 | 浏览/下载：44/0 | 提交时间：2021/11/15

High fluence rate D-T neutron source Neutron long counter

Neutronics analysis of a stacked structure for a subcritical system with LEU solution driven by a D-T neutron source for Mo-99 production 期刊论文 OAI收割
NUCLEAR SCIENCE AND TECHNIQUES, 2021, 卷号: 32
作者: Ren, Lei; Han, Yun-Cheng; Zhang, Jia-Chen; Wang, Xiao-Yu; Li, Tao-Sheng

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收藏 | 浏览/下载：42/0 | 提交时间：2022/01/10

Neutronics analysis Stacked structure Mo-99 yield Subcritical system D-T neutron source

Benchmark experiment for bismuth by slab samples with D-T neutron source 期刊论文 OAI收割
FUSION ENGINEERING AND DESIGN, 2021, 卷号: 167, 页码: 7
作者: Ding, Y.; Nie, Y.; Ren, J.; Ruan, X.; Zhao, Q.

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收藏 | 浏览/下载：33/0 | 提交时间：2021/12/09

Benchmark experiment D-T neutron source Neutron leakage spectrum TOF technique C/E value

Modeling of the source neutrons of D-T neutron generator based on in-situ depth profiling of tritium in the tritide target 期刊论文 OAI收割
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 2020, 卷号: 982
作者: Zhu, Qingjun; Bao, Jie; Chen, Wuhui; Huang, Kai

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收藏 | 浏览/下载：34/0 | 提交时间：2020/12/07

D-T neutron generator Neutronic experiment Tritium Alpha spectra Source neutrons

Benchmark experiments with slab sample using time-of-flight technique at CIAE 期刊论文 OAI收割
ANNALS OF NUCLEAR ENERGY, 2020, 卷号: 136, 页码: 21
作者:

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收藏 | 浏览/下载：29/0 | 提交时间：2022/01/19

Benchmark experiment Evaluated nuclear data Neutron leakage spectrum Time-of-flight technique D-T neutron source MCNP-4C C/E value

The braking index of PSR B0540-69 and the associated pulsar wind nebula emission after spin-down rate transition 期刊论文 OAI收割
Monthly Notices of the Royal Astronomical Society, 2020, 卷号: 494, 页码: 1865-1870
作者: HXMT

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收藏 | 浏览/下载：54/0 | 提交时间：2022/02/08

stars: magnetic field stars: neutron pulsars: general Astrophysics - High Energy Astrophysical Phenomena Abstract: In 2011 December, PSR B054-69 experienced a spin-down rate transition (SRT), after which the spin-down power of the pulsar increased by $\sim 36{{\ \rm per\ cent}}$. About 1000 d after the SRT, the X-ray luminosity of the associated pulsar wind nebula (PWN) was found to brighten by $32\pm 8{{\ \rm per\ cent}}$. After the SRT, the braking index n of PSR B0540-69 changes from n = 2.12 to 0.03 and then keeps this value for about five years before rising to n = 0.9 in the following years. We find that most of the current models have difficulties in explaining the measured braking index. One exceptive model of the braking index evolution is the increasing dipole magnetic field of PSR B0540-69. We suggest that the field increase may result from some instabilities within the pulsar core that enhance the poloidal component at the price of toroidal component of the magnetic field. The increasing dipole magnetic field will result in the X-ray brightening of the PWN. We fit the PWN X-ray light curve by two models: one assumes a constant magnetic field within the PWN during the brightening and the other assumes an enhanced magnetic field proportional to the energy density of the PWN. It appears that the two models fit the data well, though the later model seems to fit the data a bit better. This provides marginal observational evidence that magnetic field in the PWN is generated by the termination shock. Future high-quality and high-cadence data are required to draw a solid conclusion.

The regular dynamics through the finite-time Lyapunov exponent distributions in 3D Hamiltonian systems 期刊论文 OAI收割
ASTRONOMISCHE NACHRICHTEN, 2019, 卷号: 340, 期号: 9-10, 页码: 847-851
作者: Taani, Ali; Abushattal, Ahmad; Mardini, Mohammad K.

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收藏 | 浏览/下载：20/0 | 提交时间：2021/12/06

stars: neutron 3D Hamiltonian systems kinematics and dynamics axisymmetric galactic potentials

Study on secondary electron suppression in compact D-D neutron generator 期刊论文 OAI收割
NUCLEAR SCIENCE AND TECHNIQUES, 2019, 卷号: 30, 期号: 5, 页码: 7
作者: Lu, Xiao-Long; Wei, Zheng; Zhang, Zi-Min; Huang, Zhi-Wu; Bai, Xiao-Hou

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收藏 | 浏览/下载：52/0 | 提交时间：2019/11/10

D-D neutron generator Secondary electron suppression Secondary electron emission coefficient

Calculation of the wide-angle neutron spectra from the Be-9(d, xn) reaction in a thick beryllium target 期刊论文 OAI收割
CHINESE PHYSICS C, 2019, 卷号: 43, 期号: 5, 页码: 6
作者: Ding, Yan-Yan; Ma, Zhan-Wen; Huang, Zhi-Wu; Zhang, Ya-Ling; Wang, Jun-Run

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收藏 | 浏览/下载：80/0 | 提交时间：2019/11/10

neutron source Be-9(d, xn) reaction thick target wide-angle neutron spectra neutron angular distributions