对22.2 MeV质子诱导反应的中子发射横截面分析Ni和Cr的58和52
1Department of Electrical and Electronics Engineering, Giresun University, 28200, Giresun, Türkiye.
概括
这项研究验证了对-58和-52.2的质子诱导反应的核反应模型. 组合运输函数生成器模型 (CTFGM) 和二进制随机函数生成器模型 (BSFGM) 准确预测 (p,xn) 反应,显示它们在核物理研究中的实用性.
科学领域:
- 核物理 核物理 核物理
- 计算物理 计算物理
背景情况:
- 对质子诱导核反应的准确建模对于核能,医学和安全领域的应用至关重要.
- 现有的模型需要对特定同位素如-58 (58Ni) 和-52 (52Cr) 的实验数据进行验证.
研究的目的:
- 计算和比较对58Ni和52Cr的质子诱导反应的双差异截面.
- 根据实验数据评估不同理论模型 (CTFGM,BSFGM,GSM) 和模拟代码 (PHITS,TALYS,FLUKA) 的性能.
主要方法:
- 使用了PHITS 3.32和TALYS 1.96蒙特卡洛模拟代码.
- 进行了对质子相互作用的双微分截面计算.
- 将模拟结果与EXFOR库中可用的实验数据进行比较.
主要成果:
- 与TALYS相结合的CTFGM和BSFGM模型在各种角度的 (p,xn) 反应中显示出高精度.
- 通用散射模型 (GSM) 显示不论散射角度的结果都是一致的.
- FLUKA和PHITS代码显示出取决于角度的差异,特别是在较小的角度.
结论:
- 与TALYS集成的CTFGM和BSFGM模型对于模拟58Ni和52Cr上的 (p,xn) 反应是有效的.
- 模型和代码的选择对于准确的截面预测至关重要,特别是关于角分布.
- 模拟代码可能需要进一步细化,以解决在前方角度观察到的角度差异.
相关概念视频
03:23Types of Radioactivity
16.8K
The most common types of radioactivity are α decay, β decay, γ decay, neutron emission, and electron capture.
Alpha (α) decay is the emission of an α particle from the nucleus. For example, polonium-210 undergoes α decay:
Alpha (α) decay is the emission of an α particle from the nucleus. For example, polonium-210 undergoes α decay:
16.8K
03:18Nuclear Stability
18.8K
Protons and neutrons, collectively called nucleons, are packed together tightly in a nucleus. With a radius of about 10−15 meters, a nucleus is quite small compared to the radius of the entire atom, which is about 10−10 meters. Nuclei are extremely dense compared to bulk matter, averaging 1.8 × 1014 grams per cubic centimeter. If the earth’s density were equal to the average nuclear density, the earth’s radius would be only about 200 meters.
To hold positively charged protons together...
To hold positively charged protons together...
18.8K
03:18Radioactivity and Nuclear Equations
21.1K
Nuclear chemistry is the study of reactions that involve changes in nuclear structure. The nucleus of an atom is composed of protons and, except for hydrogen, neutrons. The number of protons in the nucleus is called the atomic number (Z) of the element, and the sum of the number of protons and the number of neutrons is the mass number (A). Atoms with the same atomic number but different mass numbers are isotopes of the same element.
A nuclide of an element has a specific number of protons and...
A nuclide of an element has a specific number of protons and...
21.1K
03:20Nuclear Transmutation
17.5K
Nuclear transmutation is the conversion of one nuclide into another. It can occur by the radioactive decay of a nucleus, or the reaction of a nucleus with another particle. The first manmade nucleus was produced in Ernest Rutherford’s laboratory in 1919 by a transmutation reaction, the bombardment of one type of nuclei with other nuclei or with neutrons. Rutherford bombarded nitrogen-14 atoms with high-speed α particles from a natural radioactive isotope of radium and observed...
17.5K
01:14Atomic Nuclei: Nuclear Spin State Population Distribution
981
Near absolute zero temperatures, in the presence of a magnetic field, the majority of nuclei prefer the lower energy spin-up state to the higher energy spin-down state. As temperatures increase, the energy from thermal collisions distributes the spins more equally between the two states. The Boltzmann distribution equation gives the ratio of the number of spins predicted in the spin −½ (N−) and spin +½ (N+) states.
981
02:50Nuclear Fission
9.7K
Many heavier elements with smaller binding energies per nucleon can decompose into more stable elements that have intermediate mass numbers and larger binding energies per nucleon—that is, mass numbers and binding energies per nucleon that are closer to the “peak” of the binding energy graph near 56. Sometimes neutrons are also produced. This decomposition of a large nucleus into smaller pieces is called fission. The breaking is rather random with the formation of a large...
9.7K