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We study the optical properties of glass exposed to ionizing radiation, as it occurs in the space environment. 24 glass types have been considered, both space qualified and not space qualified. 72 samples (3 for each glass type) have been…

Applied Physics · Physics 2020-09-15 Federica Simonetto , Matteo Marmonti , Marco AC Potenza

The GERG-2008 equation of state is the approved ISO standard (ISO 20765-2) for the calculation of thermophysical properties of natural gas mixtures. The composition of natural gas can vary considerably due to the diversity of origin.…

Chemical Physics · Physics 2024-09-17 Roberto Hernández-Gómez , Dirk Tuma , Daniel Lozano-Martín , César R. Chamorro

Results for energy levels, radiative rates and electron impact excitation (effective) collision strengths for transitions in Be-like Cl XIV, K XVI and Ge XXIX are reported. For the calculations of energy levels and radiative rates the…

Solar and Stellar Astrophysics · Physics 2015-06-22 K. M. Aggarwal , F. P. Keenan

Our purpose is to measure the internal radiation dose (ID) using human blood sample. In the literature, there is no process that allows the direct measurement of ID received by a person. This study has shown that it is possible to determine…

Theoretical electron density-sensitive line ratios $R_1 - R_6$ of Ar XIV soft X-ray emission lines are presented. We found that these line ratios are sensitive to electron density $n_e$, and the ratio $R_1$ is insensitive to electron…

Plasma Physics · Physics 2007-05-23 G. Y. Liang , G. Zhao , J. L. Zeng , J. R. Shi

Systematic error in determination of the absolute intensities of the two-step gamma-cascades after the thermal neutron capture and its influence on the value and localization of extracted from (n,2gamma)-reaction probable level densities…

Nuclear Experiment · Physics 2007-05-23 V. A. Khitrov , Li Chol , A. M. Sukhovoj

A method based on Monte Carlo techniques is presented for evaluating thermonuclear reaction rates. We begin by reviewing commonly applied procedures and point out that reaction rates that have been reported up to now in the literature have…

Solar and Stellar Astrophysics · Physics 2015-05-18 Richard Longland , Christian Iliadis , Art Champagne , Joe Newton , Claudio Ugalde , Alain Coc , Ryan Fitzgerald

A search for the radiative neutrinoless double electron capture with single \gray\ emission has been performed in $^{58}$Ni. Gamma radiation from a 7286 g nickel sample in natural isotope composition was measured for 58.3 d with an ultra…

Nuclear Experiment · Physics 2016-06-22 B. Lehnert , D. Degering , A. Frotscher , T. Michel , K. Zuber

Experimental conditions at the HERA-B experiment impose very strong requirements for gaseous detectors. The charged particle fluxes through the HERA-B tracking system, varying with the radial distance $R$ from the beam line, are about $2…

High Energy Physics - Experiment · Physics 2007-05-23 M. Danilov , Yu. Gilitsky , T. Kvaratschellia , L. Laptin , I. Tichomirov , M. Titov , Yu. Zaitsev

As an emerging electricity-free cooling technology, radiative cooling employs outer space as the heat sink. With this, a sky-facing thermal emitter is usually required. Due to the black-body radiation limit at ambient temperature, the…

The electron energy spectra, not connected to b-decay, of 235U- and 239Pu-films, irradiated by thermal neutrons, obtained by a Monte Carlo method is presented in the given work. The modelling was performed with the help of a computer code…

Nuclear Theory · Physics 2007-05-23 V. D. Rusova , V. N. Pavlovychb , V. A. Tarasova , S. V. Iaroshenkob , D. A. Litvinova

Purpose: The purpose of this work is to develop a new approach for high spatial resolution dosimetry based on Raman micro-spectroscopy scanning of radiochromic film (RCF). We generate dose calibration curves over an extended dose range from…

Medical Physics · Physics 2021-09-15 Connor Mcnairn , Iymad Mansour , Bryan Muir , Rowan M. Thomson , Sangeeta Murugkar

Silicon synthesis in high-temperature hydrogen burning environments presents one possible avenue for the study of abundance anomalies in globular clusters. This was suggested in a previous study, which found that the large uncertainties…

Nuclear Experiment · Physics 2020-07-22 John Dermigny , Christian Iliadis , Art Champagne , Richard Longland

The process of nuclear excitation by electron capture in plasma environments generated by the interaction of ultra-strong optical lasers with solid-state samples is investigated theoretically. With the help of a plasma model we perform a…

Plasma Physics · Physics 2018-06-20 Jonas Gunst , Yuanbin Wu , Christoph H. Keitel , Adriana Pálffy

A method of measurements of the environmental neutron background at the Baksan Neutrino Observatory of the INR RAS are described. Measurements were done by using of a proportional counter filled with mixture of Ar(2 at)+$^3$He(4 at). The…

Effects of radio-frequency power and driven frequency on the two-dimensional (axial and radial) distributions of electron density and temperature were experimentally investigated in low pressure capacitively coupled argon plasmas. The…

Plasma Physics · Physics 2020-10-22 Jidun Wu , Hao Zheng , Yanfei Wang , Fengzhu Zhou , Xiaojiang Huang

In this study it was shown that it is possible to determine radiation doses from external beam therapy both directly and retrospectively from a human blood sample. To the best of our knowledge no other studies exist on the direct…

Medical Physics · Physics 2016-01-15 AG Tanir , O Gulec , E Sahiner , MH Bolukdemir , K Koc , N Meric , SK Keles , O Kucuk

In Radiation Physics classes, point sources are typically used, for which it is relatively easy to describe the signal obtained by a radiation detector, such as the NaI(Tl) scintillation detector. The use of large extended radiation sources…

Physics Education · Physics 2023-11-16 Luis Peralta

The 232Th(n,{\gamma})233Th neutron capture reaction cross sections were measured at average neutron energies of 14.1 MeV and 14.8 MeV using the activation method. The neutron flux was determined using the monitor reaction…

Nuclear Experiment · Physics 2017-04-26 Chang-Lin Lan , Bao-Lin Xie , Meng Peng , Tao Lv , Ze-en Yao , Jin-Gen Chen , Xiang-Zhong Kong

We have performed a systematic study of the Bremsstrahlung emission from the electrons in the plasma of a commercial 14.5 GHz Electron-Cyclotron Resonance Ion Source. The electronic spectral temperature and the product of ionic and…

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