?Trion? code for radiation action calculations and its application in microdosimetry and radiobiology

Lappa, Alexander V.; Bigildeev, E. A.; Burmistrov, Dmitriy; Vasilyev, O. N.

doi:10.1007/bf01213126

Cited by 52 publications

(36 citation statements)

References 18 publications

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“…Experimental DDCS data for a variety of target materials do not exhibit a large variation in asymmetry [19]. Therefore, for non-S states, β j is described by the empirical relation (12) and β j is set equal to 2 for S states. Finally, in Eq.…”

Section: Angle Of Emissionmentioning

confidence: 99%

“…Among many others, the major codes for the simulation of electrons and ions include: ETRAN [2], EGS4 [3], PTRAN [4], and others for the transport of electrons and photons; MOCA8b [5], OREC [6], CPA100 [7], DELTA [8], ETRACK [9], and KURBUC [10], for the electron track simulations in water; MOCA14 [11] and TRION [12], for the track segment simulation of positive light ions in water. These codes use a variety of methods to construct the cross-sections needed for transport of the charged particle or track simulation.…”

Section: Introductionmentioning

confidence: 99%

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A Monte Carlo code for positive ion track simulation

Wilson

Nikjoo²

1999

Radiation and Environmental Biophysics

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An ion interaction model has been described for simulating positive ion tracks in a variety of media with the capability of interfacing with several secondary electron transport codes. Data are presented for single-and double-differential cross-sections, binding energies, probability density distribution for delocalisation parameters for conductors and tissue, branching ratios and ionisation efficiencies for water vapour and liquid water.

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Section: Angle Of Emissionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A Monte Carlo code for positive ion track simulation

Wilson

Nikjoo²

1999

Radiation and Environmental Biophysics

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“…On the basis of the Monte Carlo code TRION and the fluctuation detector method [11], the frequency-averaged mean energy imparted, eF, was calculated for volumes with three different mean chord lengths as a function of photon energy (Fig. 6).…”

Section: Contribution Of Complex and Simple Dsb To Coefficient Amentioning

confidence: 99%

Two types of double-strand breaks in electron and photon tracks and their relation to exchange-type chromosome aberrations

Michalik

Frankenberg²

1996

Radiat Environ Biophys

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Yields of DNA double-strand breaks (dsb), i.e. the average number of dsb, N, per relative molar mass, M(r), and dose, D, produced by electrons and photons in the energy range 50 eV-1 MeV were calculated. The experimental data of dsb induction by ultrasoft x-rays and by photons agree well with the calculated yields of dsb as a function of photon energy. The dsb are classified into simple and complex ones. Energy transfers of less than about 200 eV producing at least two ionizations generate mainly simple dsb, while low-energy electrons with an initial energy between 200 and 500 eV induce preferentially complex dsb. Assuming that dsb is the main DNA lesion leading to exchange-type chromosome aberrations (etca), three different mechanisms have to be considered: 1) complex dsb on its own; 2) interaction between two dsb induced by the same primary particle; and 3) interaction between two dsb induced by different primary particles. Mechanisms 1) and 2) produce a linear term, whereas mechanism 3) leads to a quadratic term for the yield of etca. The sum of contributions 1) and 2) to the yield of dicentrics describes fairly well the non-trivial structure of the experimental data. The results suggest that interaction between complex dsb does not contribute significantly to the formation of dicentrics via mechanism 3).

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“…These calculations can therefore achieve sub-micron spatial resolution and sub-keV energy resolution. Owing to these attributes, track-structure models have been developed worldwide [12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30] and have been applied in various fields, such as radiation biology [31][32][33] , radiation medicine [34][35][36] , chemical impact of radiation 37,38 , detector physics [39][40][41] and semiconductor technologies 17,42 .…”

Section: Introductionmentioning

confidence: 99%

Development and Validation of Proton Track Structure Model Applicable to Arbitrary Materials

Ogawa

Hirata

Matsuya

et al. 2021

Preprint

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A novel transport algorithm performing proton track-structure calculations in arbitrary materials was developed. Unlike conventional algorithms, which are based on the dielectric function of the target material, our algorithm uses a total stopping power formula and single-differential cross sections of secondary electron production. The former was used to simulate energy dissipation of incident protons and the latter was used to consider secondary electron production. In this algorithm, the incident proton was transmitted freely in matter until the proton produced a secondary electron. The corresponding ionising energy loss was calculated as the sum of the ionisation energy and the kinetic energy of the secondary electron whereas the non-ionising energy loss was obtained by subtracting the ionising energy loss from the total stopping power. The most remarkable attribute of this model is its applicability to arbitrary materials, i.e. the model utilises the total stopping power and the single-differential cross sections for secondary electron production rather than the material-specific dielectric functions. Benchmarking of the stopping range, radial dose distribution, secondary electron energy spectra in liquid water, and lineal energy in tissue-equivalent gas, against the experimental data taken from literature agreed well. This indicated the accuracy of the present model even for materials other than liquid water. Regarding microscopic energy deposition, this model will be a robust tool for analysing the irradiation effects of cells, semiconductors and detectors.

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?Trion? code for radiation action calculations and its application in microdosimetry and radiobiology

Cited by 52 publications

References 18 publications

A Monte Carlo code for positive ion track simulation

A Monte Carlo code for positive ion track simulation

Two types of double-strand breaks in electron and photon tracks and their relation to exchange-type chromosome aberrations

Development and Validation of Proton Track Structure Model Applicable to Arbitrary Materials

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