scholarly journals Assessing an accuracy of vgspec program through ability of calculating peak area, automatically finding the peak, identifying isotopes and determining radioactivity for cylindrical and marinelli sources

2013 ◽  
Vol 16 (3) ◽  
pp. 83-92
Author(s):  
Vinh Quang Trinh ◽  
Loan Thi Hong Truong ◽  
Nhon Van Mai
Keyword(s):  
Nuclear Physics ◽  
Hpge Detector ◽  
Gamma Spectrum ◽  
Experimental Results ◽  
Radioactive Isotopes ◽  
Gamma Spectrometer ◽  
Low Background ◽  
Processing Program ◽  
Physics Department

Genie 2000 version of gamma spectrum processing program, which is being used at Nuclear Physics Department, Physics – Technique Physics Faculty, University of Science is lacked of package for determining radioactivity of sources, also has not been comprehensibly automatic from analysis and process to identification of radioactive isotopes and evaluation of source activity. We have built version 2.1 of VGSpec program to determine source radioactivity. Then, the experiments are carried out to measure cylindrical standard and Marinelli samples by low background gamma spectrometer using HPGe detector, to compare experimental results with ones of the program, as well as assess the accuracy of VGSpec program through ability of determining radioactivity for cylindrical and Marinelli sources.

The Simulation of Low-Background Gamma Spectrometer With Clover Detector

2013 ◽  
Author(s):  
Huilan Liu ◽  
Yushou Song ◽  
Zhaoyang Xie ◽  
Baodong Sun
Keyword(s):  
Nuclear Physics ◽  
High Performance ◽  
Gamma Ray ◽  
Germanium Detector ◽  
Gamma Detector ◽  
Gamma Spectrometer ◽  
Radiation Level ◽  
Low Background ◽  
Clover Detector ◽  
Main Detector

A low-background gamma spectrometer consists of a high-performance gamma detector and a low-background chamber. It is widely used to monitor the radiation level of the environment and to identify the species of the radiological source. It is especially important for the analysis of the nuclear accident. Usually a high purity Germanium detector (HPGe) is used as a gamma ray detector. In order to enhance the detecting accuracy and sensitivity, it is essential to improve the performance of the gamma detector. In recent years, a clover detector composed of four coaxial HPGe crystals appear and is widely utilized in nuclear physics experimental research. Because of the larger dimensions and segmented structure, it displays outstanding characteristics different from traditional HPGe detectors. With a clover detector as the main detector and the HPLBS1 chamber of ORTEC as the lead chamber, the low-background gamma spectrometer is simulated by the Monte Carlo toolkit GEANT4, where the interaction processes of gamma ray provided by the GEANT4 physics list is used. The detecting performance of the low-background gamma spectrometer such as detecting efficiency and peak-total ratio are given. The results indicate that low-background gamma spectrometer with a clover as the main detector has better characteristic than that with HPGe as a main detector traditionally.

scholarly journals Study on analyzing overlaped peaks using the Gold algorithm of unfolding

2016 ◽  
Vol 19 (2) ◽  
pp. 71-79
Author(s):  
Loan Thi Hong Truong ◽  
Hoa Phuc Long Cao ◽  
Phuong Dang Nguyen ◽  
My Thi Thao Dang ◽  
Huy Quang Ngo
Keyword(s):  
Gamma Spectrometry ◽  
Environmental Samples ◽  
Hpge Detector ◽  
Gamma Spectrum ◽  
Low Level ◽  
Continuum Region ◽  
Gamma Spectra

In this work, we initially applied the Gold unfolding algorithm to deconvolute continuum region in the gamma spectra and to analyze its overlaped peaks for the gamma spectrometry using HPGe detector. The results could be used to analyse overlaped peaks of low level gamma spectrum for environmental samples.

A low-background gamma spectrometer

1973 ◽  
Vol 34 (2) ◽  
pp. 162-164
Author(s):  
Yu. A. Surkov ◽  
O. P. Sobornov
Keyword(s):  
Gamma Spectrometer ◽  
Low Background

scholarly journals LARAMED: A Laboratory for Radioisotopes of Medical Interest

Molecules ◽  
2018 ◽  
Vol 24 (1) ◽  
pp. 20 ◽  
Author(s):  
Juan Esposito ◽  
Diego Bettoni ◽  
Alessandra Boschi ◽  
Michele Calderolla ◽  
Sara Cisternino ◽  
...  
Keyword(s):  
Nuclear Physics ◽  
Radioactive Isotopes ◽  
Cyclotron Production ◽  
Production Methods ◽  
Production Technologies ◽  
Widespread Availability ◽  
New Research ◽  
Medical Interest ◽  
Scientific Fields ◽  
Medical Radionuclides

The widespread availability of novel radioactive isotopes showing nuclear characteristics suitable for diagnostic and therapeutic applications in nuclear medicine (NM) has experienced a great development in the last years, particularly as a result of key advancements of cyclotron-based radioisotope production technologies. At Legnaro National Laboratories of the National Institute of Nuclear Physics (LNL-INFN), Italy, a 70-MeV high current cyclotron has been recently installed. This cyclotron will be dedicated not only to pursuing fundamental nuclear physics studies, but also to research related to other scientific fields with an emphasis on medical applications. LARAMED project was established a few years ago at LNL-INFN as a new research line aimed at exploiting the scientific power of nuclear physics for developing innovative applications to medicine. The goal of this program is to elect LNL as a worldwide recognized hub for the development of production methods of novel medical radionuclides, still unavailable for the scientific and clinical community. Although the research facility is yet to become fully operative, the LARAMED team has already started working on the cyclotron production of conventional medical radionuclides, such as Tc-99m, and on emerging radionuclides of high potential medical interest, such as Cu-67, Sc-47, and Mn-52.

Using a clinical linac to determine the energies of gamma-ray transitions and half-lives of barium nuclei

2020 ◽  
Vol 35 (10) ◽  
pp. 2050062
Author(s):  
Abdullah Engin Çalık ◽  
Kaan Manisa ◽  
Ahmet Biçer ◽  
Mehmet Erdoğan ◽  
Mürsel Şen ◽  
...  
Keyword(s):  
Gamma Rays ◽  
Linear Accelerator ◽  
Nuclear Physics ◽  
Hpge Detector ◽  
Gamma Ray ◽  
Energy Levels ◽  
Photonuclear Reactions ◽  
High Purity Germanium ◽  
Physics Experiment ◽  
First Time

Photonuclear reactions have great importance in understanding the structure of the nuclei. These reactions, performed using the gamma rays obtained by way of bremsstrahlung, are a standard nuclear physics experiment. In this study, a non-enriched barium sample was activated for the first time by using a clinical linear accelerator (cLINACs). The spectrum of barium radioisotopes was obtained by using a gamma spectrometry with a high purity germanium (HPGe) detector. The obtained spectroscopic data were analyzed and energy levels and half-life values together with their uncertainties were obtained. Some energy levels and half-lives of [Formula: see text]Ba were determined with more precision than those of literature values.

scholarly journals Paul Taunton Matthews, 19 November 1919 - 26 February 1987

1988 ◽  
Vol 34 ◽  
pp. 553-580
Keyword(s):  
Radioactive Waste ◽  
Nuclear Physics ◽  
Imperial College ◽  
Theoretical Physics ◽  
Good Sense ◽  
Vice Chancellor ◽  
Post War ◽  
Physics Department ◽  
The University ◽  
Management Advisory

Paul Matthews died on 26 February 1987, following an accident while cycling in Cambridge. He was one of the most influential figures in the post-war revival of British theoretical physics and played a very significant role in the wider university community— in particular, as head of the Physics Department of Imperial College, chairman of the SRC Nuclear Physics Board and vice-chancellor of the University of Bath. Though retired, he was still extremely active both in research and on various public committees, most notably as chairman of the Government’s Radioactive Waste Management Advisory Committee. He was a man of transparent integrity and exceptional good sense.

scholarly journals Nuclear Physics of the s Process

2008 ◽  
Vol 25 (1) ◽  
pp. 18-29 ◽  
Author(s):  
I. Dillmann ◽  
C. Domingo Pardo ◽  
F. Käppeler ◽  
A. Mengoni ◽  
K. Sonnabend
Keyword(s):  
Cross Sections ◽  
Nuclear Physics ◽  
State Of The Art ◽  
Decay Rates ◽  
Radioactive Isotopes ◽  
Complementary Information ◽  
The Status ◽  
Direct Input ◽  
New Facilities ◽  
Capture Cross Sections

AbstractStarting from a sketch of the s-process concept formulated 50 years ago, the nuclear physics data for s-process calculations are briefly reviewed with emphasis on the status of neutron capture cross sections and beta decay rates. Accurate and comprehensive experimental data are mandatory as direct input for s-process calculations as well as for improving the complementary information from nuclear theory. The current challenges of the field are discussed in the light of new or optimized methods and state-of-the-art facilities, indicating the potential for accurate measurements and the possibility to study cross sections of radioactive isotopes. These opportunities will be considerably enriched by the enormous improvements provided by new facilities.

scholarly journals Geo-neutrinos

2012 ◽  
Vol 2 (2) ◽  
pp. 539-561
Author(s):  
L. Ludhova
Keyword(s):  
Experimental Results ◽  
Radioactive Isotopes ◽  
Future Perspectives ◽  
Short Overview ◽  
Naturally Occurring ◽  
The Earth ◽  
Disciplinary Field

Abstract. Geo-neutrinos, electron anti-neutrinos produced in β-decays of naturally occurring radioactive isotopes in the Earth, are a unique direct probe of our planet's interior. After a brief introduction about the Earth (mostly for physicists) and the very basics about the neutrinos and anti-neutrinos (mostly for geologists), I describe the geo-neutrinos' properties and the main aims of their study. An overview of the latest experimental results obtained by KamLand and Borexino experiments is provided. A short overview of future perspectives of this new inter-disciplinary field is given.

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