H. Helppi

688 total citations
34 papers, 586 citations indexed

About

H. Helppi is a scholar working on Nuclear and High Energy Physics, Atomic and Molecular Physics, and Optics and Radiation. According to data from OpenAlex, H. Helppi has authored 34 papers receiving a total of 586 indexed citations (citations by other indexed papers that have themselves been cited), including 29 papers in Nuclear and High Energy Physics, 18 papers in Atomic and Molecular Physics, and Optics and 18 papers in Radiation. Recurrent topics in H. Helppi's work include Nuclear physics research studies (29 papers), Nuclear Physics and Applications (14 papers) and Atomic and Molecular Physics (10 papers). H. Helppi is often cited by papers focused on Nuclear physics research studies (29 papers), Nuclear Physics and Applications (14 papers) and Atomic and Molecular Physics (10 papers). H. Helppi collaborates with scholars based in Finland, United States and Germany. H. Helppi's co-authors include J. Hattula, A. Pakkanen, A. Luukko, T. L. Khoo, S. R. Faber, F. Dönau, M. Jääskeläinen, P.J. Daly, Z. W. Grabowski and D. C. Radford and has published in prestigious journals such as Physical Review Letters, Physics Letters B and Nuclear Physics A.

In The Last Decade

H. Helppi

34 papers receiving 570 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. Helppi Finland 15 530 302 213 79 65 34 586
T. Kammuri Japan 13 464 0.9× 337 1.1× 154 0.7× 80 1.0× 94 1.4× 46 569
W. Waluś Poland 16 588 1.1× 298 1.0× 210 1.0× 125 1.6× 96 1.5× 32 658
R. K. Sheline United States 17 703 1.3× 363 1.2× 266 1.2× 86 1.1× 108 1.7× 61 757
J. Sztarkier Sweden 13 471 0.9× 297 1.0× 204 1.0× 98 1.2× 88 1.4× 18 554
K.H. Bhatt India 15 473 0.9× 288 1.0× 170 0.8× 84 1.1× 50 0.8× 36 524
G. Puddu Italy 8 434 0.8× 281 0.9× 118 0.6× 96 1.2× 59 0.9× 25 508
E. M. Beck United States 16 499 0.9× 247 0.8× 170 0.8× 83 1.1× 69 1.1× 28 547
B. Norum United States 13 592 1.1× 380 1.3× 171 0.8× 122 1.5× 44 0.7× 26 703
Christiane Roulet France 16 535 1.0× 240 0.8× 294 1.4× 64 0.8× 35 0.5× 29 585
R. D. Bent United States 18 731 1.4× 357 1.2× 337 1.6× 71 0.9× 29 0.4× 66 825

Countries citing papers authored by H. Helppi

Since Specialization
Citations

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

Fields of papers citing papers by H. Helppi

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

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

This figure shows the co-authorship network connecting the top 25 collaborators of H. Helppi. A scholar is included among the top collaborators of H. Helppi 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. Helppi. H. Helppi 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.
Holzmann, R., I. Ahmad, B.K. Dichter, et al.. (1987). Evolution of nuclear structure with increasing spin and internal excitation energy in 152Dy. Physics Letters B. 195(3). 321–325. 20 indexed citations
2.
McNeill, John H., R. Broda, Y.H. Chung, et al.. (1986). Level structure of proton-richN=83 Nuclei150Ho and152Tm. The European Physical Journal A. 325(1). 27–35. 5 indexed citations
3.
Garg, U., M. W. Drigert, E.G. Funk, et al.. (1986). Lifetime measurements in 184Pt and the shape coexistence picture. Physics Letters B. 180(4). 319–323. 31 indexed citations
4.
Lönnroth, T., J. Hattula, H. Helppi, et al.. (1984). Study of band crossings in 130Xe. Nuclear Physics A. 431(2). 256–268. 12 indexed citations
5.
Chung, Y.H., P. J. Daly, H. Helppi, et al.. (1984). Four-valence-proton yrast states inEr8268150. Physical Review C. 29(6). 2153–2159. 14 indexed citations
6.
Khoo, T. L., P. Chowdhury, H. Emling, et al.. (1983). Nuclear Shape Transitions and Some Properties of Aligned-Particle Configurations at High Spin. Physica Scripta. T5. 16–20. 8 indexed citations
7.
Kortelahti, M., R. Broda, Y.H. Chung, et al.. (1983). Level structure of 153Dy and the competition between collective and few-particle excitation modes in Dy Nuclei. Physics Letters B. 131(4-6). 305–308. 11 indexed citations
8.
Hattula, J., H. Helppi, & A. Luukko. (1982). In-Beam Study of 122,124,126Xe. Physica Scripta. 26(3). 205–210. 29 indexed citations
9.
Pakkanen, A., Y.H. Chung, P.J. Daly, et al.. (1982). Transition from Collective to Aligned-Particle Configurations at High Spin inDy154. Physical Review Letters. 48(22). 1530–1533. 68 indexed citations
10.
Helppi, H., et al.. (1981). High-spin level spectra of the nucleiPb195,Pb197,Pb199, andPb201. Physical Review C. 23(4). 1446–1452. 11 indexed citations
11.
Helppi, H., et al.. (1981). High-spin level structure ofHg200. Physical Review C. 23(5). 2345–2348. 7 indexed citations
12.
Goettig, L., Ch. Droste, T. Morek, et al.. (1981). In-beam study of the 128, 130Xe nuclei. Nuclear Physics A. 357(1). 109–125. 50 indexed citations
13.
Luukko, A., et al.. (1981). Level structure in 123Xe. Nuclear Physics A. 357(2). 319–332. 33 indexed citations
14.
Helppi, H., J. Hattula, & A. Luukko. (1979). Even- and odd-parity band structures in 125Xe. Nuclear Physics A. 332(1-2). 183–194. 32 indexed citations
15.
Helppi, H., et al.. (1977). High-spin level structure of the five neutron hole nucleusPb203. Physical Review C. 16(6). 2159–2164. 6 indexed citations
16.
Pakkanen, A., et al.. (1975). Decay of 14.6 h90Nb. The European Physical Journal A. 274(2). 127–129. 5 indexed citations
17.
Helppi, H. & J. Kantele. (1972). Asymmetric linear Ge(Li)Ge(Li) sum-peak coincidence spectrometer. Nuclear Instruments and Methods. 104(1). 141–145. 1 indexed citations
18.
Pakkanen, A., et al.. (1972). Low-lying levels of201Hg from the decay of201Au. Zeitschrift für Physik A Hadrons and Nuclei. 254(2). 98–105. 8 indexed citations
19.
Pakkanen, A., et al.. (1972). New 204Au activity and the decay of 202Au. Nuclear Physics A. 184(1). 157–165. 17 indexed citations
20.
Hattula, J. & H. Helppi. (1971). Simultaneous recording of true and random coincidences using a two-parameter analyzer system. Nuclear Instruments and Methods. 93(1). 83–84. 1 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.

Explore authors with similar magnitude of impact

Breakdown of academic impact, for papers by T. Kammuri Breakdown of academic impact, for papers by W. Waluś Breakdown of academic impact, for papers by R. K. Sheline Breakdown of academic impact, for papers by J. Sztarkier Breakdown of academic impact, for papers by K.H. Bhatt Breakdown of academic impact, for papers by G. Puddu Breakdown of academic impact, for papers by E. M. Beck Breakdown of academic impact, for papers by B. Norum Breakdown of academic impact, for papers by Christiane Roulet Breakdown of academic impact, for papers by R. D. Bent
Rankless by CCL
2026