Impact of high energy photons on physical, structural and magnetic properties of Mn < sub > 0.65 < /sub > Zn < sub > 0.35 < /sub > Fe < sub > 2-x < /sub > Nd < sub > x < /sub > O < sub > 4 < /sub > nanoparticles
Appl Radiat Isot. 2023 Nov 19;204:111112. doi: 10.1016/j.apradiso.2023.111112. Online ahead of print.ABSTRACTUltrafine powders of Nd+3 doped Mn-Zn ferrite powders with composition Mn0.65Zn0.35Fe2-xNdxO4 (x = 0.04, 0.06, 0.08) were prepared using the combustion method of preparation. Monophasic nanoparticle formation was confirmed by X-ray diffraction. The particle size was determined using a Transmission electron microscope (TEM). The nanopowders were investigated for their physical, structural, and magnetic properties and then radiated with gamma photons obtained from Co60 source with a dose of 500Gy, 750Gy and 1000Gy. Th...
Source: Applied Radiation and Isotopes - November 29, 2023 Category: Radiology Authors: Pranav P Naik Sher Singh Meena Pramod Bhatt Diptesh Naik Rahul Singhal Source Type: research
Evaluating dose distributions of high dose rate < sup > 60 < /sup > Co brachytherapy in an asymmetric tumor: A comparison of different designs of vaginal cylindrical applicators
In conclusion, this work suggests using a new design of a cylindrical applicator to enhance the therapeutic ratio of brachytherapy for asymmetric and irregularly shaped vaginal tumors.PMID:38029638 | DOI:10.1016/j.apradiso.2023.111124 (Source: Applied Radiation and Isotopes)
Source: Applied Radiation and Isotopes - November 29, 2023 Category: Radiology Authors: Hayder Adil Aloraibi Zahra Siavashpour Mahdi Ghorbani Marzieh Abtahi Hussam Jassim Somayeh Gholami Source Type: research
TCAD simulations of internal amplification in high purity germanium detectors
Appl Radiat Isot. 2023 Nov 22;204:111120. doi: 10.1016/j.apradiso.2023.111120. Online ahead of print.ABSTRACTSimulations of internal amplification processes in high purity germanium (HPGe) detectors for gamma radiation are presented. The Synopsys Sentaurus Technology Computer-Aided Design (TCAD) package was employed to study conditions favourable to charge multiplication within volume of the detector. The physics model was developed, and validated where possible against known results from existing literature. The model was then applied to a new detector and a systematic study of the measurable parameters influencing charge...
Source: Applied Radiation and Isotopes - November 29, 2023 Category: Radiology Authors: D Maneuski V Gostilo Source Type: research
Latent variable modeling of gamma-ray background in repeated measurements
Appl Radiat Isot. 2023 Nov 23;204:111119. doi: 10.1016/j.apradiso.2023.111119. Online ahead of print.ABSTRACTWe propose a novel approach for background subtraction in repeated gamma-ray spectrometric measurements. This entirely data-driven method eliminates the need for Monte Carlo detector simulation. To accomplish this, we utilized the framework of Latent Variable Modeling, incorporating various matrix factorization techniques and artificial neural networks. Subsequently, we applied this method to estimate radionuclide activity through spectrum unmixing. Significant improvements in sensitivity, surpassing traditional met...
Source: Applied Radiation and Isotopes - November 29, 2023 Category: Radiology Authors: Miroslav H ýža Lenka Dragounov á Mahulena Ko řistková Source Type: research
Development of an event-by-event based Li-ZnS(Ag) neutron imaging detector with selective neutron detection capability
Appl Radiat Isot. 2023 Oct 28;204:111084. doi: 10.1016/j.apradiso.2023.111084. Online ahead of print.ABSTRACTHigh sensitivity and high resolution is desired in such technologies as neutron radiography. However, the contamination of gamma photons in neutron images decreases the accuracy of neutron radiography. To solve this problem, we developed an event-by-event based neutron imaging system that can selectively detect neutrons. The developed neutron imaging system consists of an Li-ZnS(Ag) scintillator plate optically coupled to a flat panel photomultiplier tube (FP-PMT) with a light guide. Scintillation light emitted from...
Source: Applied Radiation and Isotopes - November 28, 2023 Category: Radiology Authors: Seiichi Yamamoto Masao Yoshino Kohei Nakanishi Kei Kamada Akira Yoshikawa Hiroki Tanaka Jun Kataoka Source Type: research
