阻止迈拉尔中的超重离子

IF 1.4 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms Pub Date : 2024-11-02 DOI:10.1016/j.nimb.2024.165554

R.N. Sagaidak

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引用次数: 0

摘要

将能量为 0.04⩽E/A⩽15 MeV/nucleon（0.04⩽E/A⩽15 MeV/nucleon）的重离子（HIs）的米拉尔停止力（SPs）的现有实验数据与不同的半经验模型计算结果进行了比较，目的是探究它们在估算具有实际意义的 E/A<0.5 MeV/nucleon（0.5 MeV/nucleon）极重离子的范围时的可能用途。发现裂变碎片和 E/A<1 MeV/nucleon的较轻 HI 与计算的 SP 值有明显偏差。提出了一种新的聚甲醛 SP 模型参数化方法。通过任何 SP 模型计算获得的范围估计值都显示出其平均值对近似电子停止力和核（碰撞）SP 分量的重要依赖性。后者在量程末端起着关键作用，只能通过计算获得。对于非常重的蒸发残留物（由 HIs 引起的完全聚变反应的产物），研究结果的实际适用性意味着要使用厚的捕集箔，与这些产物的估计或量程测量中得出的最大量程相对应。

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Stopping of very heavy ions in Mylar

Available experimental data on Mylar stopping powers (

S P

s) for heavy ions (HIs) at energies

0.04 ⩽ E / A ⩽ 15

MeV/nucleon have been compared to different semi-empirical model calculations with the aim of probing their possible usage for the estimates of ranges for very heavy ions at

E / A < 0.5

MeV/nucleon, which are of practical interest. Significant deviations from the calculated

S P

values were found for fission fragments and lighter HIs at

E / A < 1

MeV/nucleon. A new model parameterization for Mylar

S P

has been proposed. Range estimates obtained with any

S P

model calculation show a critical dependence of their mean values on the approximated electronic stopping powers and the nuclear (collisional)

S P

component. The last plays a crucial role at the end of the range and could only be obtained by calculations. Practical applicability of the results of investigation for very heavy evaporation residues (products of complete fusion reactions induced by HIs) implies the use of a thick catcher foil corresponding to the largest ranges derived in the estimates or the range measurements for these products.

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来源期刊

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms 物理-核科学技术

CiteScore

2.80

自引率

7.70%

发文量

231

审稿时长

1.9 months

期刊介绍： Section B of Nuclear Instruments and Methods in Physics Research covers all aspects of the interaction of energetic beams with atoms, molecules and aggregate forms of matter. This includes ion beam analysis and ion beam modification of materials as well as basic data of importance for these studies. Topics of general interest include: atomic collisions in solids, particle channelling, all aspects of collision cascades, the modification of materials by energetic beams, ion implantation, irradiation - induced changes in materials, the physics and chemistry of beam interactions and the analysis of materials by all forms of energetic radiation. Modification by ion, laser and electron beams for the study of electronic materials, metals, ceramics, insulators, polymers and other important and new materials systems are included. Related studies, such as the application of ion beam analysis to biological, archaeological and geological samples as well as applications to solve problems in planetary science are also welcome. Energetic beams of interest include atomic and molecular ions, neutrons, positrons and muons, plasmas directed at surfaces, electron and photon beams, including laser treated surfaces and studies of solids by photon radiation from rotating anodes, synchrotrons, etc. In addition, the interaction between various forms of radiation and radiation-induced deposition processes are relevant.