R.G. Helmer

6.8k citations

139 papers · 5.2k indexed · 1 hit paper · h-index 36

Radiation top 0.05%
- Nuclear Physics and Applications 82
- Radioactive Decay and Measurement Techniques 42
- X-ray Spectroscopy and Fluorescence Analysis 32
- Radiation Detection and Scintillator Technologies 15
Nuclear and High Energy Physics top 0.5%
- Nuclear physics research studies 61
- Quantum Chromodynamics and Particle Interactions 16
- Particle physics theoretical and experimental studies 14
Radiological and Ultrasound Technology top 0.1%
- Radioactivity and Radon Measurements 24
Geochemistry and Petrology top 5%
Atomic and Molecular Physics, and Optics top 2%

Co-authors: R. C. Greenwood R.J. Gehrke K. Debertin C.W. Reich Michel Meybeck Ivanildo Hespanhol C. van der Leun M.H. Putnam
Cited by: Radiation Nuclear and High Energy Physics Radiological and Ultrasound Technology
Journals: Nuclear Data Sheets (20 papers)Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment (16 papers)Nuclear Physics A (10 papers)
Partner nations: United States Switzerland France

In The Last Decade

R.G. Helmer

137 papers receiving 4.9k citations

Hit Papers

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Peers

Countries citing papers authored by R.G. Helmer

Since Specialization

Citations

This map shows the geographic impact of R.G. Helmer's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by R.G. Helmer with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites R.G. Helmer more than expected).

Fields of papers citing papers by R.G. Helmer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by R.G. Helmer. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by R.G. Helmer. The network helps show where R.G. Helmer may publish in the future.

Co-authorship network

The 25 scholars most cited alongside R.G. Helmer, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with R.G. Helmer Line = papers co-authored together R.G. Helmer links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

#	Work
1	Test of internal-conversion theory with precise γ- and X-ray spectroscopy Applied Radiation and Isotopes ·J. C. Hardy,N. Nica,V. E. Iacob,M. B. Trzhaskovskaya,R.G. Helmer	2006	6
2	New Half-Life Measurement ofHf182: Improved Chronometer for the Early Solar System Physical Review Letters ·Christof Vockenhuber,Felix Oberli,M. Bichler,I. Ahmad,G. Quitté,M. M. M. Meier,Alex N. Halliday,Alireza Mesbahi,W. Kutschera,Peter Steier,R.J. Gehrke,R.G. Helmer	2004	137
3	Precise efficiency calibration of an HPGe detector up to 3.5MeV, with measurements and Monte Carlo calculations Applied Radiation and Isotopes ·R.G. Helmer,N. Nica,J. C. Hardy,V. E. Iacob	2003	69
4	Precise efficiency calibration of an HPGe detector: source measurements and Monte Carlo calculations with sub-percent precision Applied Radiation and Isotopes ·J. C. Hardy,V. E. Iacob,M. Sanchez‐Vega,徐克达,P. Lipnik,Yusof Mahshuri,Xiuan Sui,R.G. Helmer	2002	93
5	High accuracy measurements and Monte Carlo calculations of the relative efficiency curve of an HPGe detector from 433 to 2754 keV Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment ·順子岡本,R.G. Helmer	2000	34
6	Water Pollution Control: A Guide to the Use of Water Quality Management Principles R.G. Helmer,Ivanildo Hespanhol	1998	262
7	Calculation of coincidence summing corrections for a specific small soil sample geometry University of North Texas Digital Library (University of North Texas) ·R.G. Helmer,R.J. Gehrke	1996	4
8	Nuclear Data Sheets for A = 159 Nuclear Data Sheets ·R.G. Helmer	1994	14
9	Energy separation of the doublet of intrinsic states at the ground state ofTh229 Physical Review Letters ·C.W. Reich,R.G. Helmer	1990	94
10	Global freshwater quality : a first assessment Blackwell eBooks ·Michel Meybeck,Deborah V. Chapman,R.G. Helmer	1989	91
11	Gamma- and X-Ray Spectrometry with Semiconductor Detectorsbreakdown → CERN Document Server (European Organization for Nuclear Research) ·K. Debertin,R.G. Helmer	1988	629
12	Schädelidentifizierung durch elektronische Bildmischung : Zugleich ein Beitrag zur Konstitutionsbiometrie und Dickenmessung der Gesichtsweichteile R.G. Helmer	1984	23
13	Analytical functions for fitting peaks from Ge semiconductor detectors Nuclear Instruments and Methods ·R.G. Helmer,Singh Alpana	1980	44
14	Recommended standards for gamma-ray energy calibration (1979) Atomic Data and Nuclear Data Tables ·R.G. Helmer,P.H.M. Van Assche,C. van der Leun	1979	99
15	Reevaluation of precise γ-ray energies for calibration of Ge(Li) spectrometers Nuclear Instruments and Methods ·R.G. Helmer,R. C. Greenwood,R.J. Gehrke	1978	124
16	Global trends in water pollution control legislation OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information) ·Guntis Ozolins,Ha Bean Yoo,R.G. Helmer	1977	0
17	Levels in 183Ta from the decay of 183Hf Nuclear Physics A ·Robin Bisha,R.G. Helmer,C.W. Reich	1969	22
18	Numerical construction of level schemes — 149Pm Nuclear Instruments and Methods ·R.G. Helmer,A. Bäcklin	1968	28
19	Decay ofTm172 Physical Review ·A.P. Mohankumar,R.G. Helmer	1967	16
20	LEVEL STRUCTURE IN Au$sup 197$ FROM THE DECAY OF Hg$sup 197$m, Hg$sup 197$, AND Pt$sup 19$$sup 7$ Physical Review ·R.G. Helmer,Robin Bisha	1965	8

About R.G. Helmer

R.G. Helmer is a scholar working on Radiation, Nuclear and High Energy Physics, Radiological and Ultrasound Technology, Surfaces, Coatings and Films and Atomic and Molecular Physics, and Optics, having authored 139 papers that have together received 5.2k indexed citations. Recurring topics across this work include Nuclear Physics and Applications (82 papers), Nuclear physics research studies (61 papers), Radioactive Decay and Measurement Techniques (42 papers), X-ray Spectroscopy and Fluorescence Analysis (32 papers), Radioactivity and Radon Measurements (24 papers), Quantum Chromodynamics and Particle Interactions (16 papers), Radiation Detection and Scintillator Technologies (15 papers) and Particle physics theoretical and experimental studies (14 papers). The work is most often cited by research in Radiation (2.9k citations), Nuclear and High Energy Physics (2.3k citations), Radiological and Ultrasound Technology (793 citations), Geochemistry and Petrology (203 citations) and Atomic and Molecular Physics, and Optics (986 citations). R.G. Helmer has collaborated with scholars based in United States, Switzerland and France. Frequent co-authors include R. C. Greenwood, R.J. Gehrke, K. Debertin, C.W. Reich, Michel Meybeck, Ivanildo Hespanhol, C. van der Leun, M.H. Putnam, J. C. Hardy and Robert L. Heath. Their work appears in journals such as Nuclear Data Sheets, Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment, Nuclear Physics A, Applied Radiation and Isotopes and Nuclear Technology.

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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