J. Ullman

2.5k total citations · 1 hit paper
21 papers, 1.6k citations indexed

About

J. Ullman is a scholar working on Nuclear and High Energy Physics, Atomic and Molecular Physics, and Optics and Radiation. According to data from OpenAlex, J. Ullman has authored 21 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 16 papers in Nuclear and High Energy Physics, 11 papers in Atomic and Molecular Physics, and Optics and 7 papers in Radiation. Recurrent topics in J. Ullman's work include Neutrino Physics Research (11 papers), Nuclear physics research studies (5 papers) and Atomic and Subatomic Physics Research (4 papers). J. Ullman is often cited by papers focused on Neutrino Physics Research (11 papers), Nuclear physics research studies (5 papers) and Atomic and Subatomic Physics Research (4 papers). J. Ullman collaborates with scholars based in United States and France. J. Ullman's co-authors include K. Lande, J. R. Distel, T. Daily, P. Wildenhain, Bruce Cleveland, Raymond J. Davis, C. K. Lee, Chenye Wu, P. J. Gollon and B. T. Cleveland and has published in prestigious journals such as Physical Review Letters, The Astrophysical Journal and Physics Letters B.

In The Last Decade

J. Ullman

21 papers receiving 1.6k 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.

Measurement of the Solar Electron Neutrino Flux with the Homestake Chlorine Detector

1998 1.1k citations Bruce Cleveland, T. Daily et al. The Astrophysical Journal profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
J. Ullman United States	10	1.5k	136	135	96	42	21	1.6k
K. Lande United States	13	1.6k 1.1×	116 0.9×	162 1.2×	58 0.6×	32 0.8×	57	1.7k
D. Tadić Croatia	19	933 0.6×	210 1.5×	63 0.5×	64 0.7×	47 1.1×	95	1.1k
B. Pontecorvo Russia	17	2.2k 1.4×	151 1.1×	296 2.2×	30 0.3×	80 1.9×	55	2.3k
D. Sinclair United States	17	556 0.4×	80 0.6×	174 1.3×	25 0.3×	19 0.5×	43	705
T. Kajita Japan	22	1.7k 1.1×	83 0.6×	255 1.9×	80 0.8×	33 0.8×	62	1.8k
T. K. Gaisser United States	18	793 0.5×	54 0.4×	201 1.5×	18 0.2×	22 0.5×	57	854
Raoul D. Viollier South Africa	19	644 0.4×	248 1.8×	315 2.3×	60 0.6×	86 2.0×	68	818
William Willis United States	6	568 0.4×	117 0.9×	24 0.2×	41 0.4×	33 0.8×	8	687
W. Hofmann Germany	16	801 0.5×	43 0.3×	326 2.4×	92 1.0×	12 0.3×	64	875
Fernando B. Morinigo United States	9	320 0.2×	167 1.2×	180 1.3×	56 0.6×	96 2.3×	19	456

Countries citing papers authored by J. Ullman

Since Specialization

Citations

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

Fields of papers citing papers by J. Ullman

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authorship network of co-authors of J. Ullman

This figure shows the co-authorship network connecting the top 25 collaborators of J. Ullman. A scholar is included among the top collaborators of J. Ullman 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 J. Ullman. J. Ullman 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

1.

Cleveland, Bruce, T. Daily, Raymond J. Davis, et al.. (1998). Measurement of the Solar Electron Neutrino Flux with the Homestake Chlorine Detector. The Astrophysical Journal. 496(1). 505–526. 1133 indexed citations breakdown →

2.

Cleveland, B. T., T. Daily, R. Davis, et al.. (1995). Update on the measurement of the solar neutrino flux with the Homestake chlorine detector. Nuclear Physics B - Proceedings Supplements. 38(1-3). 47–53. 121 indexed citations

3.

Lande, K., B. T. Cleveland, T. Daily, et al.. (1992). Solar neutrino observations with the Homestake 37Cl detector. AIP conference proceedings. 243. 1122–1133. 1 indexed citations

4.

Cleveland, B. T., T. Daily, R. Davis, et al.. (1991). Results from the Homestake Solar Neutrino Observatory.. 667–675. 1 indexed citations

5.

Davis, R., et al.. (1990). Results of the Homestake Chlorine Solar Neutrino Experiment. ICRC. 7. 155. 2 indexed citations

6.

Davis, Raymond J., K. Lande, T. Daily, et al.. (1990). The Homestake chlorine experiments and the variation in the solar neutrino flux. 1–13. 1 indexed citations

7.

Lande, K., et al.. (1989). Report on the chlorine solar neutrino experiment.. 518. 6 indexed citations

8.

Ullman, J.. (1981). Limits on the Flux of Slowly Moving Very Massive Particles Carrying Electric or Magnetic Charge. Physical Review Letters. 47(5). 289–292. 33 indexed citations

9.

Ullman, J.. (1978). Search for failure of rotational invariance in first- and second-forbidden beta decays. Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields. 17(7). 1750–1753. 14 indexed citations

10.

Cleveland, B. T., William R. Leo, Chenye Wu, et al.. (1975). Lepton Conservation in the DoubleβDecay ofSe82. Physical Review Letters. 35(12). 757–760. 55 indexed citations

11.

Ullman, J., et al.. (1974). Observation of a weak beta-decay branch inTc99. Physical Review C. 9(6). 2358–2362. 4 indexed citations

12.

Ullman, J., et al.. (1974). Search for weak beta and gamma branches in the beta decay ofFe59. Physical Review C. 10(2). 949–951. 1 indexed citations

13.

Ullman, J., et al.. (1970). Search for Double Gamma Emission from the First Excited States ofCa40andZr90. Physical Review C. 2(2). 462–467. 6 indexed citations

14.

Gollon, P. J., et al.. (1970). A search for the double beta decay of 48Ca and lepton conservation. Nuclear Physics A. 158(2). 337–363. 97 indexed citations

15.

Ullman, J., et al.. (1968). A streamer chamber used in a search for double beta decay. Nuclear Instruments and Methods. 66(1). 1–12. 3 indexed citations

16.

Ullman, J., et al.. (1967). Double beta decay in 48Ca and the conservation of leptons. Physics Letters B. 26(2). 112–116. 29 indexed citations

17.

Gorodetzky, S., et al.. (1962). Polarisation des protons dans la diffusion élastique sur O161 et C12. Nuclear Physics. 38. 177–185. 4 indexed citations

18.

Ullman, J.. (1962). Nuclear matrix elements in the beta decay of RaE. Physics Letters. 1(8). 339–341. 11 indexed citations

19.

Gorodetzky, S., et al.. (1961). Mesures de la polarisation de protons diffusés élastiquement sur 12C au voisinage de 5 MeV. Journal de Physique. 22(10). 570–572. 4 indexed citations

20.

Ullman, J., et al.. (1961). Determination of Electron and Positron Helicity with Møller and Bhabha Scattering. Physical Review. 122(2). 536–548. 38 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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