Radioactive Decays in Geant4

Hauf, Steffen; Kuster, M.; Batič, Matej; Bell, Zane W.; Hoffmann, D. H. H.; Lang, P.; Neff, S.; Pia, M.G.; Weidenspointner, G.; Zoglauer, Andreas

doi:10.1109/tns.2013.2270894

Cited by 60 publications

(58 citation statements)

References 29 publications

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“…The neutrino flux Φ νe is evaluated by using GEANT4 with JENDL/HE-2007 data and G4RadioactiveDecay. Main contribution of the spectrum comes from the ν 0 through β + decay and the highest energy of ∼ 4.813 For further discussions, we show theoretical cross section for 37 Cl(ν e ,e − ) 37 Ar [44], 71 Ga(ν e ,e − ) 71 Ge [45], 2 H(ν e ,e − )pp [46] and 2 H(ν e ,ν e )np reactions [46].…”

Section: Discussion For Electron-neutrino Detectionmentioning

confidence: 99%

“…such as β + decay and electron capture (EC). Radioactive decay processes for 27 Si and subsequent emitted electron-neutrino energy distributions are simulated by using "G4RadioactiveDecay" [36,37] class based on the Evaluated Nuclear Structure Data File (ENSDF) [38].…”

Section: Simulation Methodsmentioning

confidence: 99%

“…One is the radiochemical detection technique, which has been widely used for the solar neutrino detection experiments. The cross sections for 37 Cl(ν e ,e − ) 37 Ar [44], 71 Ga(ν e ,e − ) 71 Ge [45], 2 H(ν e ,e − )pp [46] and 2 H(ν e ,ν e )np [46] reactions are plotted in Fig. 3 for the radiochemical detection of the neutrino from 27 Si.…”

Section: A Radiochemical Detectorsmentioning

confidence: 99%

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New neutrino source for the study of solar neutrino physics in the vacuum-matter transition region

et al. 2016

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Production of a neutrino source through proton induced reaction is studied by using the particle transport code, GEANT4. Unstable isotope such as 27 Si can be produced when 27 Al target is bombarded by 15 MeV energetic proton beams. One of the future open issues related to the vacuum-matter transition region in the solar neutrino physics is the determination of the electron-neutrino survival probability P(ν e → ν e ) in that region [14], which is also closely related to questions such as existence of sterile neutrinos [15,16] and/or the non-standard neutrino interactions (NSI) [17], roles of CNO cycle in the Sun (metallicity problem) [18, 19], etc.For this reason, it becomes of importance to detect in detail the solar neutrino in the transition region. Moreover, it would be more efficient if we have the controllable neutrino source in the energy region, which may enable us to extract both the total number and the energy distribution of neutrinos in a more accurate way, with the more elaborate detection system. In this work, we propose an accelerator based new artificial electron-neutrino source for the experiments of the vacuum-matter transition region. By adjusting the incident proton energy, we can produce a specific unstable isotope as an efficient electron-neutrino source. Unstable isotope, 27 Si, is our main neutrino source, which can be produced through 27 Al(p,n) 27 Si reaction and emits electron-neutrinos through radioactive decay processes. In this case, the neutrinos can have the energy similar to the transition region.We outline the paper in the following way. In Sec. II, we summarize the simulation method used in this work. Benchmarking simulations for 27 Al(p,n) 27 Si reaction, calculations for 27 Si yields and energy spectra of electron-neutrinos from decay of 27 Si are presented in 3 Sec. III. Electron-neutrino detections, event rate of the scattered electron and possibility of detecting the sterile neutrino are discussed in Sec. IV and V, respectively. The summary is given in Sec. VI. II. SIMULATION METHODAs an electron-neutrino source, we consider 27 Si isotope in this work, which can be produced through 27 Al(p,n) 27 Si reaction with a threshold energy E th of 5.803 MeV. To evaluate 27 Si yields produced by proton beams on 27 Al target, we use the particle transport code, GEANT4 (GEometry ANd Tracking) v10.1 [20, 21], which is a tool kit that allows for microscopic Monte Carlo simulations of particles interacting with materials.For proton inelastic scattering, four different hadronic models such as "G4BertiniCascade" [22], "G4BinaryCascade" [23], "G4Precompound" [24] and "G4INCLCascade" [25] are available in GEANT4 (v10.1). To check the validity of the models, we first perform simulations of 27 Si production by p + 27 Al reaction and compare the calculated results with the experimental data taken from the EXFOR database [26]. For brevity, we refer to GEANT4 simulations with "G4BertiniCascade", "G4BinaryCascade", "G4Precompound" and "G4INCLCascade" as "G4BERTI", "G4BC", "G4PRECOM" and "G4INCL", ...

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Section: Discussion For Electron-neutrino Detectionmentioning

confidence: 99%

Section: Simulation Methodsmentioning

confidence: 99%

Section: A Radiochemical Detectorsmentioning

confidence: 99%

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New neutrino source for the study of solar neutrino physics in the vacuum-matter transition region

et al. 2016

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“…The SPECT images were used to define the radionuclide activity in each voxel. The decay was s simulated using the G4RadioactiveDecay module which allows the simulation of the decay of more than 2000 radioactive nuclei using the decay information from the ENSDF database [12]. The point of the radionuclide decay is sampled uniformly throughout each voxel.…”

Section: Dose Calculation Proceduresmentioning

confidence: 99%

Radiation-Induced Second Cancer Risk Estimates From Radionuclide Therapy

Bednarz

Besemer

2017

EPJ Web Conf.

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The use of radionuclide therapy in the clinical setting is expected to increase significantly over the next decade. There is an important need to understand the radiation-induced second cancer risk associated with these procedures. In this study the radiation-induced cancer risk in five radionuclide therapy patients was investigated. These patients underwent serial SPECT imaging scans following injection as part of a clinical trial testing the efficacy of a 131 Iodine-labeled radiopharmaceutical. Using these datasets the committed absorbed doses to multiple sensitive structures were calculated using RAPID, which is a novel Monte Carlo-based 3D dosimetry platform developed for personalized dosimetry. The excess relative risk (ERR) for radiation-induced cancer in these structures was then derived from these dose estimates following the recommendations set forth in the BEIR VII report. The radiation-induced leukemia ERR was highest among all sites considered reaching a maximum value of approximately 4.5. The radiation-induced cancer risk in the kidneys, liver and spleen ranged between 0.3 and 1.3. The lifetime attributable risks (LARs) were also calculated, which ranged from 30 to 1700 cancers per 100,000 persons and were highest for leukemia and the liver for both males and females followed by radiation-induced spleen and kidney cancer. The risks associated with radionuclide therapy are similar to the risk associated with external beam radiation therapy.

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“…2 (a). The emitted ν e energy distributions are obtained by using "G4RadioactiveDecay" [5] class based on the Evaluated Nuclear Structure Data File (ENSDF) [6].…”

Section: Radiochemical Detectorsmentioning

confidence: 99%

Neutrino Interactions with Matter by a New Neutrino Source From the Isotope Radioactive Decay Produced by the Proton Accelerator

Shin¹,

Park²,

Kajino³

et al. 2017

Proceedings of the 14th International Symposium on Nuclei in the Cosmos (NIC2016)

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A new neutrino source for future's neutrino experiments is suggested in this work. Unstable isotope, 27 Si, can be produced when 27 Al target is bombarded by 15 MeV proton beams. Through the decay of the 27 Si, a new electron-neutrino source in the 0 ∼ 5.0 MeV energy range is obtained. Production of the neutrino source is studied by using GEANT4 code with JENDL-4.0/HE. For radioactive decay processes, we use "G4RadioactiveDecay" model based on the Evaluated Nuclear Structure Data File (ENSDF). As for the detection system of the new neutrino source, we evaluate reaction or event rates for available radiochemical detectors and LENA type scintillator detector.

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Radioactive Decays in Geant4

Cited by 60 publications

References 29 publications

New neutrino source for the study of solar neutrino physics in the vacuum-matter transition region

New neutrino source for the study of solar neutrino physics in the vacuum-matter transition region

Radiation-Induced Second Cancer Risk Estimates From Radionuclide Therapy

Neutrino Interactions with Matter by a New Neutrino Source From the Isotope Radioactive Decay Produced by the Proton Accelerator

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