H. Appel

939 total citations
63 papers, 760 citations indexed

About

H. Appel is a scholar working on Materials Chemistry, Atomic and Molecular Physics, and Optics and Radiation. According to data from OpenAlex, H. Appel has authored 63 papers receiving a total of 760 indexed citations (citations by other indexed papers that have themselves been cited), including 27 papers in Materials Chemistry, 17 papers in Atomic and Molecular Physics, and Optics and 13 papers in Radiation. Recurrent topics in H. Appel's work include Diamond and Carbon-based Materials Research (12 papers), High-pressure geophysics and materials (8 papers) and Ion-surface interactions and analysis (8 papers). H. Appel is often cited by papers focused on Diamond and Carbon-based Materials Research (12 papers), High-pressure geophysics and materials (8 papers) and Ion-surface interactions and analysis (8 papers). H. Appel collaborates with scholars based in Germany, South Africa and United States. H. Appel's co-authors include W. -G. Thies, H. Schopper, Robert W. Evans, Peter F. Lindley, S. Samar Hasnain, J.P.F. Sellschop, J. Günter Grossmann, W. Kündig, B. D. Patterson and E. Holzschuh and has published in prestigious journals such as SHILAP Revista de lepidopterología, Journal of Molecular Biology and Physics Letters B.

In The Last Decade

H. Appel

62 papers receiving 714 citations

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
H. Appel Germany 13 317 169 126 115 107 63 760
O. Hignette France 16 289 0.9× 123 0.7× 47 0.4× 25 0.2× 17 0.2× 42 1.0k
L. Palladino Italy 18 262 0.8× 349 2.1× 207 1.6× 228 2.0× 6 0.1× 53 956
A. Scafati Italy 12 131 0.4× 203 1.2× 107 0.8× 174 1.5× 5 0.0× 25 584
M. Peter Switzerland 18 234 0.7× 436 2.6× 18 0.1× 37 0.3× 13 0.1× 43 971
E. R. Bauminger Israel 21 203 0.6× 426 2.5× 43 0.3× 8 0.1× 71 0.7× 70 1.6k
S. Ciccariello Italy 13 335 1.1× 99 0.6× 72 0.6× 62 0.5× 4 0.0× 82 652
M. Lemonnier France 14 272 0.9× 152 0.9× 81 0.6× 22 0.2× 4 0.0× 28 698
J.R. Haumann United States 8 159 0.5× 170 1.0× 27 0.2× 11 0.1× 9 0.1× 17 592
E. Mayer Austria 15 651 2.1× 187 1.1× 22 0.2× 24 0.2× 11 0.1× 34 1.0k
Nicholas Phillips United Kingdom 21 297 0.9× 81 0.5× 48 0.4× 36 0.3× 5 0.0× 61 1.4k

Countries citing papers authored by H. Appel

Since Specialization
Citations

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

Fields of papers citing papers by H. Appel

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of H. Appel

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

All Works

20 of 20 papers shown
1.
Renk, K. F., et al.. (2007). Semiconductor-Superlattice Parametric Oscillator as a Subterahertz and Possible Terahertz Radiation Source. SHILAP Revista de lepidopterología. 2007. 1–9.
2.
Jain, Manish, H. Appel, Alexander Meier, W. Wegscheider, & K. F. Renk. (2006). Semiconductor-superlattice oscillator with superlattices connected in parallel and series as active elements for generation of millimetre waves. IEE Proceedings - Microwaves Antennas and Propagation. 153(5). 441–441. 2 indexed citations
3.
Schomburg, E., Florian Klappenberger, Andreas Weber, et al.. (2003). Millimetre-wave generation with semiconductor superlattice mounted in cavity fabricated by UV-photolithography and galvanoforming. Electronics Letters. 39(10). 784–785. 6 indexed citations
4.
Pohlmann, Carsten, et al.. (1999). TDPAC studies of the iron–molybdenum cofactor in nitrogenase. Hyperfine Interactions. 120-121(1-8). 731–736. 1 indexed citations
5.
6.
Grossmann, J. Günter, et al.. (1993). Metal-induced Conformational Changes in Transferrins. Journal of Molecular Biology. 229(3). 585–590. 56 indexed citations
7.
Grossmann, J. Günter, Margarete Neu, E. Pantos, et al.. (1992). X-ray solution scattering reveals conformational changes upon iron uptake in lactoferrin, serum and ovo-transferrins. Journal of Molecular Biology. 225(3). 811–819. 115 indexed citations
8.
Appel, H., et al.. (1992). Influence of protein dynamics on the metal-sites of ovotransferrin. European Biophysics Journal. 21(2). 147–54. 8 indexed citations
9.
Sellschop, J.P.F., S. H. Connell, E. Sideras‐Haddad, et al.. (1992). Hydrogen in and on natural and synthetic diamond. Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms. 68(1-4). 133–140. 14 indexed citations
10.
Appel, H., et al.. (1990). TDPAC studies of hafnium-transferrin-complexes: The influence of phosphate on the metal binding configurations. Hyperfine Interactions. 61(1-4). 1219–1222. 2 indexed citations
11.
Bharuth‐Ram, K., et al.. (1989). Residence sites of19F implants in carbon allotropes. Radiation effects and defects in solids. 108(1). 73–80. 9 indexed citations
12.
Adrian, G., H. Appel, R. A. Bohlander, H. Häffner, & Β. Kanellakopulos. (1988). Mössbauer effect studies on organometallic237Np-compounds. Hyperfine Interactions. 40(1-4). 275–278. 3 indexed citations
13.
Appel, H.. (1987). TDPAC studies of the metal-binding sites in serum transferrin: comparison between 181 Hf-labeled human- and rat-serum transferrin. Journal of Inorganic Biochemistry. 31(4). 229–239. 5 indexed citations
14.
Connell, S. H., et al.. (1987). Residence sites for19F ions implanted into diamond. Hyperfine Interactions. 36(3-4). 185–200. 13 indexed citations
15.
Appel, H., et al.. (1987). TDPAC studies of181Hf-labelled transferrin: Comparison between human and rat serum transferrin. Hyperfine Interactions. 35(1-4). 957–960. 3 indexed citations
16.
Adrian, G., et al.. (1986). Structure and magnetic ordering in SrNpO3. Hyperfine Interactions. 28(1-4). 585–588. 1 indexed citations
17.
Appel, H. & Herwig Schopper. (1968). Numerische Tabellen für die Berechnung von Winkelkorrelationen in der α-, β- und γ-Spektroskopie : 3j-, 6j-, 9j-Symbole, F- und Γ-Koeffizienten. Springer eBooks. 1 indexed citations
18.
Bowen, P.H., G. Cox, G.B. Huxtable, et al.. (1963). Production cross-sections and neutron polarization in (p,n) reactions at 143 MeV. Nuclear Physics. 41. 177–184. 6 indexed citations
19.
Appel, H.. (1959). Messung der Korrelation zwischen Beta- und zirkularpolarisierter Gammastrahlung im Zusammenhang mit der Nichterhaltung der Parität. Zeitschrift für Physik A Hadrons and Nuclei. 155(5). 580–594. 11 indexed citations
20.
Appel, H. & H. Schopper. (1957). MEASUREMENT OF THE CORRELATION BETWEEN /cap beta/ AND CIRCULARLY POLARIZED $gamma$ RAYS IN Co$sup 60$, Zr$sup 95$, AND Sb$sup 12$$sup 4$. 12 indexed citations

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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