P. Sperr

3.1k total citations
128 papers, 2.6k citations indexed

About

P. Sperr is a scholar working on Mechanics of Materials, Nuclear and High Energy Physics and Materials Chemistry. According to data from OpenAlex, P. Sperr has authored 128 papers receiving a total of 2.6k indexed citations (citations by other indexed papers that have themselves been cited), including 79 papers in Mechanics of Materials, 34 papers in Nuclear and High Energy Physics and 34 papers in Materials Chemistry. Recurrent topics in P. Sperr's work include Muon and positron interactions and applications (76 papers), Particle accelerators and beam dynamics (20 papers) and Nuclear physics research studies (20 papers). P. Sperr is often cited by papers focused on Muon and positron interactions and applications (76 papers), Particle accelerators and beam dynamics (20 papers) and Nuclear physics research studies (20 papers). P. Sperr collaborates with scholars based in Germany, South Africa and United States. P. Sperr's co-authors include G. Kögel, W. Triftshäuser, Werner Egger, D. Evers, D. G. Kovar, S. E. Vigdor, M.R. Maier, W. Assmann, K. Rudolph and Y. Eisen and has published in prestigious journals such as Physical Review Letters, Physical review. B, Condensed matter and Applied Physics Letters.

In The Last Decade

P. Sperr

126 papers receiving 2.5k citations

Peers

Countries citing papers authored by P. Sperr

Since Specialization

Citations

This map shows the geographic impact of P. Sperr'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 P. Sperr with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites P. Sperr more than expected).

Fields of papers citing papers by P. Sperr

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by P. Sperr. 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 P. Sperr. The network helps show where P. Sperr may publish in the future.

Co-authorship network of co-authors of P. Sperr

This figure shows the co-authorship network connecting the top 25 collaborators of P. Sperr. A scholar is included among the top collaborators of P. Sperr based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with P. Sperr. P. Sperr is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

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20 of 20 papers shown

#	Work	Indexed citations
1	Defect Studies in Thin-Film SiO2 of a Metal-Oxide-Silicon Capacitor Using Drift-Assisted Positron Annihilation Lifetime Spectroscopy 2025 ·Nanomaterials ·(unknown), Werner Egger, C. Corbel, P. Sperr, Maik Butterling, A. Wagner, Maciej Oskar Liedke, (unknown), Michael Mayerhofer, Kangho Lee, Georg S. Duesberg, G. Dollinger, Marcel Dickmann	0
2	Identification and Reversible Optical Switching of NV⁺ Centers in Diamond 2025 ·Advanced Functional Materials ·Marcel Dickmann, (unknown), (unknown), (unknown), Werner Egger, (unknown), Christoph Hugenschmidt, P. Sperr, Maik Butterling, Maciej Oskar Liedke, Andreas Wagner, José Dörner, T. Schwarz‐Selinger, G. Dollinger	2
3	Micrometer positron beam characterization at the Scanning Positron Microscope Interface 2017 ·Journal of Physics Conference Series ·(unknown), Marcel Dickmann, G. Kögel, Werner Egger, P. Sperr, G. Dollinger	1
4	Probing the Molecular Level of Polyimide-Based Solvent Resistant Nanofiltration Membranes with Positron Annihilation Spectroscopy 2009 ·The Journal of Physical Chemistry B ·Àngels Cano-Òdena, Pieter Vandezande, Katrien Hendrix, (unknown), Khaled Mostafa, Werner Egger, P. Sperr, J. De Baerdemaeker, Ivo F.J. Vankelecom	36
5	Nature of Defects Induced by Au Implantation in Hexagonal Silicon Carbide Single Crystals 2009 ·AIP conference proceedings ·A. Gentils, M.F. Barthe, Werner Egger, P. Sperr, Floyd D. McDaniel, Barney L. Doyle	1
6	Surface and bulk investigations at the high intensity positron beam facility NEPOMUC 2008 ·Applied Surface Science ·Christoph Hugenschmidt, G. Dollinger, Werner Egger, G. Kögel, Benjamin Löwe, Joachim Mayer, Philip Pikart, C. Piochacz, (unknown), K. Schreckenbach, P. Sperr, M. Stadlbauer	30
7	NEPOMUC - the New Positron Beam Facility at FRM II 2004 ·Materials science forum ·Christoph Hugenschmidt, G. Kögel, (unknown), K. Schreckenbach, P. Sperr, (unknown), W. Triftshäuser	2
8	Investigation of Defects in Copper Alloys Selected for Nuclear Fusion Technology 2004 ·Materials science forum ·Vladimı́r Slugeň, G. Kögel, J. Kuriplach, (unknown), P. Sperr, Werner Egger, W. Triftshäuser, (unknown), Martin Petriska, (unknown)	2
9	Measurements of defect structures of a cyclically deformed Al–Mg–Si alloy by positron annihilation techniques 2004 ·Materials Science and Engineering A ·Werner Egger, G. Kögel, P. Sperr, W. Triftshäuser, Jürgen Bär, (unknown), H.‐J. Gudladt	8
10	Positron source based on neutron capture 2003 ·Radiation Physics and Chemistry ·Christoph Hugenschmidt, G. Kögel, (unknown), K. Schreckenbach, P. Sperr, W. Triftshäuser	5
11	Fatigue and fracture-induced defect structures of metals investigated by positron microscopy 2003 ·International Journal of Materials Research (formerly Zeitschrift fuer Metallkunde) ·Werner Egger, G. Kögel, P. Sperr, W. Triftshäuser, Jürgen Bär, (unknown), H.‐J. Gudladt	1
12	Investigation of defect distributions in neutron-irradiated and thermally treated reactor steels by positron annihilation 2002 ·Applied Surface Science ·Vladimı́r Slugeň, G. Kögel, P. Sperr, W. Triftshäuser	11
13	Negatively charged vacancy defects in 6H–SiC after low-energy proton implantation and annealing 2001 ·Physica B Condensed Matter ·M.F. Barthe, D.T. Britton, C. Corbel, A. Hempel, L. Henry, P. Desgardin, (unknown), G. Kögel, P. Sperr, W. Triftshäuser	3
14	Lifetime Measurements with a Scanning Positron Microscope 2001 ·Physical Review Letters ·(unknown), G. Kögel, P. Sperr, W. Triftshäuser	67
15	A concept of a scanning positron microscope 1995 ·Analytical and Bioanalytical Chemistry ·(unknown), (unknown), (unknown), P. Sperr, D.T. Britton, A. Zecca, R.S. Brusa, Grzegorz P. Karwasz	11
16	Investigation of defect structures in deuteron irradiated and deformed stainless steel 316 by positron annihilation 1990 ·Radiation effects and defects in solids ·(unknown), A.P. de Lima, N. Ayres de Campos, P. Sperr, G. Kögel, W. Triftshäuser	3
17	Positron lifetime and Doppler-broadening studies of vacancy formation and phase transformation in uranium 1985 ·Journal of Nuclear Materials ·G. Kögel, P. Sperr, W. Triftshäuser, S. J. Rothman	8
18	The time evolution of the equilibration process in 208Pb + 110Pd collisions 1979 ·Physics Letters B ·K. E. Rehm, H.G. Essel, (unknown), P. Kienle, H.J. Körner, P. Sperr, W. Wagner	11
19	Observation of the double-charge-exchange reaction48Ca(32S,32Si)48Ti atE lab=125 MeV 1979 ·The European Physical Journal A ·(unknown), H.G. Essel, P. Kienle, H. J. K�rner, K. E. Rehm, P. Sperr, W. Wagner	2
20	The (3He, n) reaction on even (f, p) shell nuclei at 18 and 21 MeV (I) 1972 ·Nuclear Physics A ·D. Evers, W. Assmann, K. Rudolph, S.J. Skorka, P. Sperr	89

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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