Validation of elastic cross section models for space radiation applications

Werneth, Charles M.; Xu, Xiaojing; Norman, Ryan B.; Ford, William P.; Maung, Khin Maung

doi:10.1016/j.nimb.2016.12.009

Cited by 8 publications

(2 citation statements)

References 282 publications

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“…Moreover, total fragmentation cross section models can be used for normalizing and anchoring parametric models, such as DDFRG [12,13,119]. Werneth et al [146][147][148][149][150] developed a relativistic (kinematics) multiple scattering theory (RMST) for the prediction of reaction, elastic, total, and elastic differential cross sections for space radiation-relevant reactions. The fundamental nuclear constituents of the MST are defined as the nucleons, and the quark structure of individual nucleons is not considered.…”

Section: Modelingmentioning

confidence: 99%

“…Another interesting result is that relativistic kinematic effects will depend on both energy and relative mass of the projectile and target [148]. A comprehensive validation effort [149] showed that the FIGURE 20 | Experimental data of total reaction cross sections for 4 Heinduced reactions on 237 Np targets, compared with two different parameterizations. The parameterizations shown are by Tripathi et al [109] with the modifications described by Horst et al [43] and the parameterization by Shen et al [110] with the modifications proposed by Sihver et al [111].…”

Section: Modelingmentioning

confidence: 99%

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Are Further Cross Section Measurements Necessary for Space Radiation Protection or Ion Therapy Applications? Helium Projectiles

et al. 2020

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The helium (4He) component of the primary particles in the galactic cosmic ray spectrum makes significant contributions to the total astronaut radiation exposure. 4He ions are also desirable for direct applications in ion therapy. They contribute smaller projectile fragmentation than carbon (12C) ions and smaller lateral beam spreading than protons. Space radiation protection and ion therapy applications need reliable nuclear reaction models and transport codes for energetic particles in matter. Neutrons and light ions (1H, 2H, 3H, 3He, and 4He) are the most important secondary particles produced in space radiation and ion therapy nuclear reactions; these particles penetrate deeply and make large contributions to dose equivalent. Since neutrons and light ions may scatter at large angles, double differential cross sections are required by transport codes that propagate radiation fields through radiation shielding and human tissue. This work will review the importance of 4He projectiles to space radiation and ion therapy, and outline the present status of neutron and light ion production cross section measurements and modeling, with recommendations for future needs.

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