Modernization of the DCHAIN-PHITS activation code with new features and updated data libraries

Ratliff, Hunter N.; Matsuda, Norihiro; Abe, Shin‐ichiro; Miura, Takuya; Furuta, Takuya; Iwamoto, Yosuke; Sato, Tatsuhiko

doi:10.1016/j.nimb.2020.10.005

Cited by 17 publications

(5 citation statements)

References 21 publications

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“…The radioactivation of 2 dental metals was calculated using the Particle and Heavy Ion Transport code System v.3.24 20 and DCHAIN-SP 2014. 21 The DCHAIN specification manual describes that DCHAIN estimates induced radionuclides and their radioactivity by adding nuclide production rates of neutrons below 20 MeV that were calculated from cross-section library and those of protons, heavy ions, mesons, and high energy neutrons above 20 MeV. In the MC simulation, nuclear interactions of protons and secondary neutrons were simulated using the Liège intranuclear cascade model 22 , 23 and JENDL-4.0 neutron cross section library, 24 respectively.…”

Section: Methodsmentioning

confidence: 99%

Identification of Induced Radionuclides Produced from Dental Metals in Proton Beam Therapy for Head and Neck Cancer

Kato

Katō

Narita

et al. 2023

Advances in Radiation Oncology

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Section: Methodsmentioning

confidence: 99%

Identification of Induced Radionuclides Produced from Dental Metals in Proton Beam Therapy for Head and Neck Cancer

Kato

Katō

Narita

et al. 2023

Advances in Radiation Oncology

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“…FIFRELIN is a code based on parameterized nuclear shapes at scission and Hauser-Feshback algorithms for statistical decay of primary fission fragments. FIFRELIN is actively updated incorporating new features such as an interface to a burn-up code DCHAIN [20,21] and multi-chance fission [22]. Further details on FIFRELIN is provided elsewhere [23].…”

Section: Methodsmentioning

confidence: 99%

Investigation of the structure in ²³⁵U(n_th,fis) prompt gamma energy spectrum by FIFRELIN

Ogawa,

Litaize,

Mancusi

et al. 2024

EPJ Web of Conf.

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The energy spectrum of prompt gamma-rays from 235U thermal fission is reproduced by a fission reaction model FIFRELIN to identify the origin of spectral features. This spectrum is characterized by a bump at 4-4.5 MeV, a shoulder at around 8 MeV, and a tail above 10 MeV, which are attributed to 132Sn and 133Sb, fission fragments with mass from 130 to 134, and those with mass from 99 to 104, charge from 40 to 42, and spin from 12 ℏto 16 ℏ, respectively. Among prompt gamma-rays, high-energy part is important to get insight into scission, because the quanta are emitted by highly excited fission fragments, which still keep the memory of the scission configuration. Our analysis suggests that coincidence detection of high energy gamma-rays and their source fission fragments identifying their isotopic species, spin and excitation energy with particular focus on those with mass number less than 104 will be useful to make conclusions about the origin of high energy gamma-rays.

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“…Also, we used DCHAIN tally integrated into PHITS to calculate the radioactivation. The DCHAIN estimates the induced radionuclides and their radioactivity by adding nuclide production rates of neutrons <20 MeV that were calculated from the cross-section library and those of protons, heavy ions, mesons, and high energy neutrons >20 MeV [19]. Titanium placed in the air was irradiated by the virtual monoenergetic proton beams.…”

Section: Virtual Mono Energetic Proton Beamsmentioning

confidence: 99%

Radioactivation effects of titanium caused by clinical proton beam: a simulation study

Kato,

Murakami

2024

Biomed. Phys. Eng. Express

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Objective. In proton beam therapy (PBT), metals in the patient body perturb the dose distribution, and their radioactivation may affect the dose distribution around the metal; however, the radioactivation effect has been not clarified with PBT. In this study, we aimed to evaluate the radioactivation effect of metal depending on proton energies and secondary neutrons with a clinical proton beam using a Monte Carlo (MC) simulation.Approach. The radionuclides produced from a titanium alloy (Ti-6Al-4V) and their radioactivity were calculated using a 210-MeV passive scattering proton beam with a 60-mm Spread-out Bragg Peak, and the deposited doses caused by the radioactivation were computed using the MC simulation. The position of metal was changed according to the proton mean energy in water. To assess neutron effects on the radioactivation, we calculated the radioactivation in following three situations: (i) full MC simulation with neutrons, (ii) simulation without secondary neutrons generated from the beamline components, and (iii) simulation without any secondary neutrons.Main results. Immediately after the irradiation, the radionuclide with the largest activity was Sc-45 m (half-life of 318 ms) regardless of the proton energy and the presence of neutrons. Total radioactivity tended to increase according to the proton energy. The accumulated dose for 24 h caused by the metal activation showed an increasing trend with the proton energy, with a maximum increase rate of 0.045% to the prescribed dose. The accumulated dose at a distance of 10 mm from the metal was lower than 1/10 of that at a distance of 1 mm.Significance. The radioactivation effect of the titanium was comprehensively evaluated in the clinical passive scattering proton beam. We expect that radioactivation effects on the clinical dose distribution would be small. We consider that these results will help the clinical handling of high-Z metals in PBT.

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Modernization of the DCHAIN-PHITS activation code with new features and updated data libraries

Cited by 17 publications

References 21 publications

Identification of Induced Radionuclides Produced from Dental Metals in Proton Beam Therapy for Head and Neck Cancer

Identification of Induced Radionuclides Produced from Dental Metals in Proton Beam Therapy for Head and Neck Cancer

Investigation of the structure in ²³⁵U(n_th,fis) prompt gamma energy spectrum by FIFRELIN

Radioactivation effects of titanium caused by clinical proton beam: a simulation study

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Modernization of the DCHAIN-PHITS activation code with new features and updated data libraries

Cited by 17 publications

References 21 publications

Identification of Induced Radionuclides Produced from Dental Metals in Proton Beam Therapy for Head and Neck Cancer

Identification of Induced Radionuclides Produced from Dental Metals in Proton Beam Therapy for Head and Neck Cancer

Investigation of the structure in 235U(nth,fis) prompt gamma energy spectrum by FIFRELIN

Radioactivation effects of titanium caused by clinical proton beam: a simulation study

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Investigation of the structure in ²³⁵U(n_th,fis) prompt gamma energy spectrum by FIFRELIN