R. Engfer

4.1k total citations · 2 hit papers
53 papers, 2.5k citations indexed

About

R. Engfer is a scholar working on Nuclear and High Energy Physics, Atomic and Molecular Physics, and Optics and Mechanics of Materials. According to data from OpenAlex, R. Engfer has authored 53 papers receiving a total of 2.5k indexed citations (citations by other indexed papers that have themselves been cited), including 35 papers in Nuclear and High Energy Physics, 22 papers in Atomic and Molecular Physics, and Optics and 21 papers in Mechanics of Materials. Recurrent topics in R. Engfer's work include Muon and positron interactions and applications (21 papers), Nuclear physics research studies (21 papers) and Atomic and Molecular Physics (21 papers). R. Engfer is often cited by papers focused on Muon and positron interactions and applications (21 papers), Nuclear physics research studies (21 papers) and Atomic and Molecular Physics (21 papers). R. Engfer collaborates with scholars based in Switzerland, Germany and Netherlands. R. Engfer's co-authors include H.K. Walter, E.A. Hermes, H. Schneuwly, A. van der Schaaf, A. Zehnder, G. Otter, J.L. Vuilleumier, H.S. Pruys, T. Kozłowski and W. Bertl and has published in prestigious journals such as Physical Review Letters, Nuclear Physics B and Physics Letters B.

In The Last Decade

R. Engfer

53 papers receiving 2.4k citations

Hit Papers

align trajectories

What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

Search for the decay μ+ → e+e+e−

1988 461 citations U. Bellgardt, G. Otter et al. Nuclear Physics B profile →
A search for μ-e conversion in muonic gold

2006 440 citations W. Bertl, R. Engfer et al. The European Physical Journal C profile →

Peers

Countries citing papers authored by R. Engfer

Since Specialization

Citations

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

Fields of papers citing papers by R. Engfer

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of R. Engfer

This figure shows the co-authorship network connecting the top 25 collaborators of R. Engfer. A scholar is included among the top collaborators of R. Engfer 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 R. Engfer. R. Engfer is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

Sort: Min cites: Since: Top N: Style:

20 of 20 papers shown

#	Work	Indexed citations
1	A search for μ-e conversion in muonic gold breakdown → 2006 ·The European Physical Journal C ·W. Bertl, R. Engfer, E.A. Hermes, G. Kurz, T. Kozłowski, (unknown), G. Otter, (unknown), N.M. Ryskulov, A. van der Schaaf, P. Wintz, I. Zychor	440
2	Improved Limit on the Branching Ratio ofμ→eConversion on Lead 1996 ·Physical Review Letters ·(unknown), (unknown), H. Haan, (unknown), G. Otter, (unknown), P. Wintz, Julia Hofmann, W. Bertl, J. Egger, B. Krause, (unknown), R. Engfer, C. Findeisen, E.A. Hermes, T. Kozłowski, C. Niebuhr, H.S. Pruys, A. van der Schaaf	100
3	Measurement of the decay π+→e+νee+e− and search for a light Higgs boson 1989 ·Physics Letters B ·S. Egli, R. Engfer, C. Grab, E.A. Hermes, N. Kraus, H.S. Pruys, A. van der Schaaf, R. Eichler, T. Kozłowski, C. Niebuhr, H. K. Walter, W. Bertl, N. Lordong, D. Vermeulen, U. Bellgardt, G. Otter	41
4	Analysis of the rare allowed muon decay μ+→e+vev¯μe+e− 1988 ·Nuclear Physics A ·Alfred Kersch, N. Kraus, R. Engfer	5
5	Search for the decay μ+ → e+e+e− breakdown → 1988 ·Nuclear Physics B ·U. Bellgardt, G. Otter, R. Eichler, L. Felawka, C. Niebuhr, H. K. Walter, W. Bertl, N. Lordong, J. Martino, S. Egli, R. Engfer, C. Grab, M. Grossmann-Handschin, E.A. Hermes, N. Kraus, F. Muheim, H.S. Pruys, A. van der Schaaf, D. Vermeulen	461
6	Limits for short-lived neutral particles emitted in μ+ or π+ decay 1986 ·Physics Letters B ·R. Eichler, L. Felawka, N. Kraus, C. Niebuhr, H.K. Walter, S. Egli, R. Engfer, C. Grab, E.A. Hermes, H.S. Pruys, A. van der Schaaf, D. Vermeulen, W. Bertl, N. Lordong, U. Bellgardt, G. Otter, T. Kozłowski, J. Martino	54
7	Search for the decay μ+ → e+e+e− 1985 ·Nuclear Physics B ·W. Bertl, S. Egli, R. Eichler, R. Engfer, L. Felawka, C. Grab, (unknown), N. Kraus, N. Lordong, J. Martino, (unknown), (unknown), M. Grossmann-Handschin	120
8	Inclusive neutron and charged particle spectra from the absorption of stopped negative pions in nickel isotopes 1983 ·Nuclear Physics A ·(unknown), H.S. Pruys, R. Engfer, E.A. Hermes, F. W. Schlepütz, (unknown), T. Kozłowski, U. Sennhauser, H.K. Walter	6
9	Absorption of stopped π− in 59Co, 75As, 197Au and 209Bi investigated by in-beam and activation γ-ray spectroscopy 1979 ·Nuclear Physics A ·H.S. Pruys, R. Engfer, Robert Hartmann, U. Sennhauser, H.-J. Pfeiffer, H.K. Walter, J. Morgenstern, A. Wytténbach, E. Gadioli, (unknown)	36
10	Absorption of Stopped pi- in As-75 and Au-197 1977 ·Helvetica physica acta ·H.S. Pruys, U. Sennhauser, Robert Hartmann, A. Wytténbach, (unknown), H.-J. Pfeiffer, R. Engfer, H.K. Walter, J. Morgenstern	9
11	Charge parameters, isotope shifts, quadrupole moments, and nuclear excitation in muonic 170–174,176Yb 1975 ·Nuclear Physics A ·A. Zehnder, F. Boehm, (unknown), R. Engfer, H.K. Walter, J.L. Vuilleumier	33
12	Spectra of neutrons from μ capture in thallium, lead and bismuth 1974 ·The European Physical Journal A ·W. U. Schröder, U. Jahnke, K. H. Lindenberger, G. Röschert, R. Engfer, H.K. Walter	28
13	Study of X-rays and nuclear γ-rays in muonic thallium 1972 ·Nuclear Physics A ·H. Backe, R. Engfer, U. Jahnke, E. Kankeleit, (unknown), C. Petitjean, L. Schellenberg, H. Schneuwly, W. U. Schröder, H.K. Walter, A. Zehnder	79
14	Observation of electric quadrupole X-ray transitions in muonic thallium, lead and bismuth 1972 ·Nuclear Physics A ·H. Schneuwly, L. Schellenberg, H. Backe, R. Engfer, U. Jahnke, E. Kankeleit, K. H. Lindenberger, (unknown), C. Petitjean, W. U. Schröder, H.K. Walter, A. Zehnder	16
15	Muon capture in 151Eu and 153Eu 1971 ·Nuclear Physics A ·C. Petitjean, H. Backe, R. Engfer, U. Jahnke, K. H. Lindenberger, H. Schneuwly, W. U. Schröder, H.K. Walter	29
16	Muonic isomer shift measurements in Sm, W and Os isotopes and their interpretation in terms of changes in nuclear charge distribution 1968 ·Physics Letters B ·(unknown), H. Backe, R. Engfer, (unknown), E. Kankeleit, Uwe Schröder, H.K. Walter, K. Wien	32
17	Measurement of the magnetic hyperfine splitting of nuclear γ rays in muonic thallium 1968 ·Physics Letters B ·(unknown), H. Backe, R. Engfer, E. Kankeleit, W. U. Schröder, H.K. Walter, K. Wien	20
18	Elastic electron scattering experiments on Be and C at 53 MeV and their analysis using an improved phase-shift method 1967 ·Nuclear Physics A ·(unknown), R. Engfer, Wolfgang Bühring	34
19	Measurement of the rms radius of12C by elastic electron scattering at 53 MeV 1967 ·The European Physical Journal A ·R. Engfer, (unknown)	27
20	Nuclear charge radius difgerence for 46Ti — 50Ti 1966 ·Physics Letters ·H. Theissen, R. Engfer, (unknown)	8

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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