A simple method for estimating the potential of the pyroelectric crystal surface
Appl Radiat Isot. 2022 Apr 12;185:110230. doi: 10.1016/j.apradiso.2022.110230. Online ahead of print.ABSTRACTThe potential of the pyroelectric crystal surface has been estimated using experimental data. The temperature of the pyroelectric crystal, the electron current from the crystal surface to the target, and the X-ray spectrum were simultaneously measured. The potential calculated from the temperature and the electron current was compared with the experimental endpoint energy of the X-ray spectrum. The calculated potential reasonably agreed with the experimental endpoint energy.PMID:35436700 | DOI:10.1016/j.apradiso.202...
Source: Applied Radiation and Isotopes - April 18, 2022 Category: Radiology Authors: Katsumi Hanamoto Takahiro Kataoka Kiyonori Yamaoka Source Type: research

A simple method for estimating the potential of the pyroelectric crystal surface
Appl Radiat Isot. 2022 Apr 12;185:110230. doi: 10.1016/j.apradiso.2022.110230. Online ahead of print.ABSTRACTThe potential of the pyroelectric crystal surface has been estimated using experimental data. The temperature of the pyroelectric crystal, the electron current from the crystal surface to the target, and the X-ray spectrum were simultaneously measured. The potential calculated from the temperature and the electron current was compared with the experimental endpoint energy of the X-ray spectrum. The calculated potential reasonably agreed with the experimental endpoint energy.PMID:35436700 | DOI:10.1016/j.apradiso.202...
Source: Applied Radiation and Isotopes - April 18, 2022 Category: Radiology Authors: Katsumi Hanamoto Takahiro Kataoka Kiyonori Yamaoka Source Type: research

A simple method for estimating the potential of the pyroelectric crystal surface
Appl Radiat Isot. 2022 Apr 12;185:110230. doi: 10.1016/j.apradiso.2022.110230. Online ahead of print.ABSTRACTThe potential of the pyroelectric crystal surface has been estimated using experimental data. The temperature of the pyroelectric crystal, the electron current from the crystal surface to the target, and the X-ray spectrum were simultaneously measured. The potential calculated from the temperature and the electron current was compared with the experimental endpoint energy of the X-ray spectrum. The calculated potential reasonably agreed with the experimental endpoint energy.PMID:35436700 | DOI:10.1016/j.apradiso.202...
Source: Applied Radiation and Isotopes - April 18, 2022 Category: Radiology Authors: Katsumi Hanamoto Takahiro Kataoka Kiyonori Yamaoka Source Type: research

Software for standard-based analysis of thick target PIGE data
Appl Radiat Isot. 2022 Apr 12;185:110244. doi: 10.1016/j.apradiso.2022.110244. Online ahead of print.ABSTRACTSoftware, "SyrPIGE", has been developed to perform particle induced γ-ray emission (PIGE) data analysis of thick targets relying on a standard-based method. It allows self-consistent and direct analysis of PIGE data considering easy calibration of PIGE spectra, on-screen identification of every γ-ray line, manual input or evaluation of E12 values for every element at established γ-ray energies, direct generation of stopping power data based on built-in electronic stopping power calculations for protons, ability t...
Source: Applied Radiation and Isotopes - April 17, 2022 Category: Radiology Authors: M S Rihawy D Halloum R Hidar A Wassouf Source Type: research

Separation of radium and actinium using zirconia
Appl Radiat Isot. 2022 Apr 11;185:110238. doi: 10.1016/j.apradiso.2022.110238. Online ahead of print.ABSTRACTZirconia was investigated as a radiation-resistant support for radium and actinium aqueous ion separations. Acetate and total metal ion concentrations were experimentally evaluated as factors that could affect retention using La and Ba surrogates. Pseudo-second order rate constants were derived and the uptake of La was determined to be endothermic. Elution profiles containing Ba, La, 228Ra, 228Ac, and 212Pb are presented and discussed.PMID:35430492 | DOI:10.1016/j.apradiso.2022.110238 (Source: Applied Radiation and Isotopes)
Source: Applied Radiation and Isotopes - April 17, 2022 Category: Radiology Authors: M Alex Brown Source Type: research

Software for standard-based analysis of thick target PIGE data
Appl Radiat Isot. 2022 Apr 12;185:110244. doi: 10.1016/j.apradiso.2022.110244. Online ahead of print.ABSTRACTSoftware, "SyrPIGE", has been developed to perform particle induced γ-ray emission (PIGE) data analysis of thick targets relying on a standard-based method. It allows self-consistent and direct analysis of PIGE data considering easy calibration of PIGE spectra, on-screen identification of every γ-ray line, manual input or evaluation of E12 values for every element at established γ-ray energies, direct generation of stopping power data based on built-in electronic stopping power calculations for protons, ability t...
Source: Applied Radiation and Isotopes - April 17, 2022 Category: Radiology Authors: M S Rihawy D Halloum R Hidar A Wassouf Source Type: research

Separation of radium and actinium using zirconia
Appl Radiat Isot. 2022 Apr 11;185:110238. doi: 10.1016/j.apradiso.2022.110238. Online ahead of print.ABSTRACTZirconia was investigated as a radiation-resistant support for radium and actinium aqueous ion separations. Acetate and total metal ion concentrations were experimentally evaluated as factors that could affect retention using La and Ba surrogates. Pseudo-second order rate constants were derived and the uptake of La was determined to be endothermic. Elution profiles containing Ba, La, 228Ra, 228Ac, and 212Pb are presented and discussed.PMID:35430492 | DOI:10.1016/j.apradiso.2022.110238 (Source: Applied Radiation and Isotopes)
Source: Applied Radiation and Isotopes - April 17, 2022 Category: Radiology Authors: M Alex Brown Source Type: research

Calculation of volume fractions regardless scale deposition in the oil industry pipelines using feed-forward multilayer perceptron artificial neural network and MCNP6 code
Appl Radiat Isot. 2022 Apr 9;185:110215. doi: 10.1016/j.apradiso.2022.110215. Online ahead of print.ABSTRACTDuring the production of oil and gas, barium sulfate (BaSO4) scale occurs on the inner walls of the tubes leading the reduction of the internal diameter, making the fluid passage difficult and complicating the calculation of volume fractions of fluids. In this sense, this study presents a methodology for the development of volume fractions of fluids multiphase meters and the prediction of barium sulfate (BaSO4) scale thickness. The spectra obtained by two NaI(Tl) detectors that record the transmitted and scattered be...
Source: Applied Radiation and Isotopes - April 16, 2022 Category: Radiology Authors: C ésar M Salgado Roos S F Dam Eddie J A Puertas William L Salgado Source Type: research

Calculation of volume fractions regardless scale deposition in the oil industry pipelines using feed-forward multilayer perceptron artificial neural network and MCNP6 code
Appl Radiat Isot. 2022 Apr 9;185:110215. doi: 10.1016/j.apradiso.2022.110215. Online ahead of print.ABSTRACTDuring the production of oil and gas, barium sulfate (BaSO4) scale occurs on the inner walls of the tubes leading the reduction of the internal diameter, making the fluid passage difficult and complicating the calculation of volume fractions of fluids. In this sense, this study presents a methodology for the development of volume fractions of fluids multiphase meters and the prediction of barium sulfate (BaSO4) scale thickness. The spectra obtained by two NaI(Tl) detectors that record the transmitted and scattered be...
Source: Applied Radiation and Isotopes - April 16, 2022 Category: Radiology Authors: C ésar M Salgado Roos S F Dam Eddie J A Puertas William L Salgado Source Type: research

Radon surveys and effectiveness of remedial actions in spas on the Ischia island (Italy)
Appl Radiat Isot. 2022 Apr 10;185:110221. doi: 10.1016/j.apradiso.2022.110221. Online ahead of print.ABSTRACTThe possible damaging effects on human health of inhaled radon and its decay products are of interest to workers and the public. In particular, radon in thermal environments often occurs in high concentrations. Therefore, investigations and remedial actions are important to reduce activity concentration values and associated risk. This work concerns the analysis of two surveys of radon gas activity concentration carried out in 2006/2007 and 2019/2020 at twenty thermal spas on the island of Ischia (Italy). Annual mea...
Source: Applied Radiation and Isotopes - April 15, 2022 Category: Radiology Authors: G La Verde V D'Avino C Sabbarese V Roca M Pugliese Source Type: research

High energy ion beams from the plasma focus
Appl Radiat Isot. 2022 Apr 7;185:110224. doi: 10.1016/j.apradiso.2022.110224. Online ahead of print.ABSTRACTInstability development in the pinch induces a locally enhanced electric field that accelerates the charged particles to extraordinary high energies. Rapid discharge is the singular state of the ion source confirming high plasma impedance. High energy ion beam is correlated to the electrical discharge parameters and consequently the ion acceleration potential is directly related to the mean ion energy. Multi-MeV ions have been measured by magnetic spectrometry and nuclear activation yield-ratio to obtain the ion ener...
Source: Applied Radiation and Isotopes - April 14, 2022 Category: Radiology Authors: Mahmud Vahdat Roshan Nadia Vahdat Roshan Seong Ling Yap Source Type: research

Activity measurement of mixed complex radionuclide like < sup > 152 < /sup > Eu with different methods
Appl Radiat Isot. 2022 Apr 7;185:110228. doi: 10.1016/j.apradiso.2022.110228. Online ahead of print.ABSTRACT152Eu has been standardized by three independent 4π β-γ coincidence counting systems with beta detectors as proportional counter, plastic scintillator and liquid scintillator along with the CIEMAT/NIST method. The average activity concentration by primary methods was linked to key comparison reference value (KCRV) by comparing it with that of 4π γ ionization chamber (GIC) whose calibration factor was determined from the KCRV (BIPM.RI(II)-K1.Eu-152 and CCRI(II)-K2.Eu-152) and deviates from GIC by ± 0.16% indicat...
Source: Applied Radiation and Isotopes - April 14, 2022 Category: Radiology Authors: Anuradha Ravindra D B Kulkarni Ritu Sharma S S Dahiwale Sanjay D Dhole Sajin Prasad S V Sathian Source Type: research

High energy ion beams from the plasma focus
Appl Radiat Isot. 2022 Apr 7;185:110224. doi: 10.1016/j.apradiso.2022.110224. Online ahead of print.ABSTRACTInstability development in the pinch induces a locally enhanced electric field that accelerates the charged particles to extraordinary high energies. Rapid discharge is the singular state of the ion source confirming high plasma impedance. High energy ion beam is correlated to the electrical discharge parameters and consequently the ion acceleration potential is directly related to the mean ion energy. Multi-MeV ions have been measured by magnetic spectrometry and nuclear activation yield-ratio to obtain the ion ener...
Source: Applied Radiation and Isotopes - April 14, 2022 Category: Radiology Authors: Mahmud Vahdat Roshan Nadia Vahdat Roshan Seong Ling Yap Source Type: research

Activity measurement of mixed complex radionuclide like < sup > 152 < /sup > Eu with different methods
Appl Radiat Isot. 2022 Apr 7;185:110228. doi: 10.1016/j.apradiso.2022.110228. Online ahead of print.ABSTRACT152Eu has been standardized by three independent 4π β-γ coincidence counting systems with beta detectors as proportional counter, plastic scintillator and liquid scintillator along with the CIEMAT/NIST method. The average activity concentration by primary methods was linked to key comparison reference value (KCRV) by comparing it with that of 4π γ ionization chamber (GIC) whose calibration factor was determined from the KCRV (BIPM.RI(II)-K1.Eu-152 and CCRI(II)-K2.Eu-152) and deviates from GIC by ± 0.16% indicat...
Source: Applied Radiation and Isotopes - April 14, 2022 Category: Radiology Authors: Anuradha Ravindra D B Kulkarni Ritu Sharma S S Dahiwale Sanjay D Dhole Sajin Prasad S V Sathian Source Type: research

A new radionuclide identification method for low-count energy spectra with multiple radionuclides
Appl Radiat Isot. 2022 Apr 6;185:110219. doi: 10.1016/j.apradiso.2022.110219. Online ahead of print.ABSTRACTRadionuclide identification is to recognize the radionuclides in the environment by analyzing the energy spectrum. Rapid and accurate identification is important for nuclear security. Current radionuclide identification methods based on traditional peak search require background subtraction. As a result, they have difficulties to deal with complex situations in practical applications such as low-count energy spectrum and mixed nuclides. In this paper, we propose a new radionuclide identification method with a feature...
Source: Applied Radiation and Isotopes - April 12, 2022 Category: Radiology Authors: Chunmiao Li Shuangquan Liu Chao Wang Xiaopan Jiang Xiaoli Sun Mohan Li Long Wei Source Type: research