J. L. Ullmann

3.5k citations

188 papers · 2.4k · h-index 27

Impact in

Radiation top 0.2%
- Nuclear Physics and Applications
- Radiation Detection and Scintillator Technologies
Nuclear and High Energy Physics top 1%
- Nuclear physics research studies
- Quantum Chromodynamics and Particle Interactions
- Astronomical and nuclear sciences

Papers in

Radiation 141
- Nuclear Physics and Applications 140
- Radiation Detection and Scintillator Technologies 35
Nuclear and High Energy Physics 115
- Nuclear physics research studies 107

Co-authors: T. A. Bredeweg (77 shared papers)R. C. Haight (59 shared papers)J. M. O’Donnell (60 shared papers)A. Couture (69 shared papers)M. Jändel (59 shared papers)L. Krusin‐Elbaum (13 shared papers)N. S. P. King (19 shared papers)J. R. Thompson (11 shared papers)
Journals: Physical review. C (28 papers)Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment (11 papers)Nuclear Data Sheets (10 papers)Nuclear Physics A (8 papers)Physical Review Letters (6 papers)
Partner nations: United States Czechia France

In The Last Decade

J. L. Ullmann

177 papers receiving 2.3k citations

Peers

Countries citing papers authored by J. L. Ullmann

Since Specialization

Citations

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

Fields of papers citing papers by J. L. Ullmann

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

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

Co-authors

The 25 scholars most cited alongside J. L. Ullmann, linked wherever they have co-authored with each other. Click a name or a connecting line to browse the papers they share.

Border = papers with J. L. Ullmann Line = papers co-authored together J. L. Ullmann links everyone, so they are left out of the graph.

All Works

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20 of 20 papers shown

Showing the 20 most-cited of 188 papers — load more, or switch the sort, to bring in the rest.

#	Work
1	Enhancement of persistent currents in Bi2Sr2CaCu2O8 tapes with splayed columnar defects induced with 0.8 GeV protons Applied Physics Letters ·L. Krusin‐Elbaum, J. R. Thompson, R. Wheeler, A. D. Marwick, C. Li, S. Patel, D. T. Shaw, P. W. Lisowski, J. L. Ullmann	1994	127
2	Proton-induced cross sections relevant to production of 225Ac and 223Ra in natural thorium targets below 200MeV Applied Radiation and Isotopes ·John W. Weidner, S. G. Mashnik, Kevin D. John, François Hemez, B. Ballard, H. Bach, Eva R. Birnbaum, Leo Bitteker, A. Couture, D. Dry, Michael E. Fassbender, M. S. Gulley, Kevin Jackman, J. L. Ullmann, Laura E. Wolfsberg, F.M. Nortier	2012	76
3	Enhancement of transport critical current densities at 75 K in (Bi,Pb)2Sr2Ca2Cu3Oy/Ag tapes by means of fission tracks from irradiation by 0.8 GeV protons Applied Physics Letters ·H. Safar, J. H. Cho, S. Fleshler, M. P. Maley, J. O. Willis, J.Y. Coulter, J. L. Ullmann, P. W. Lisowski, G. N. Riley, M.W. Rupich, J. R. Thompson, L. Krusin‐Elbaum	1995	74
4	225Ac and 223Ra production via 800MeV proton irradiation of natural thorium targets Applied Radiation and Isotopes ·John W. Weidner, S. G. Mashnik, Kevin D. John, B. Ballard, Eva R. Birnbaum, Leo Bitteker, A. Couture, Michael E. Fassbender, George S. Goff, R. Gritzo, François Hemez, Wolfgang Runde, J. L. Ullmann, Laura E. Wolfsberg, F.M. Nortier	2012	73
5	Background identification and suppression for the measurement of (n,γ) reactions with the DANCE array at LANSCE Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment ·R. Reifarth, T. A. Bredeweg, A. M. Alpizar-Vicente, J.C. Browne, Ernst Esch, U. Greife, R. C. Haight, R. Hatarik, A. K. Kronenberg, J. M. O’Donnell, R. S. Rundberg, J. L. Ullmann, D. J. Vieira, J. B. Wilhelmy, J.M. Wouters	2004	59
6	Neutron capture cross section ofAm241 Physical Review C ·M. Jändel, T. A. Bredeweg, E. M. Bond, M. B. Chadwick, R. R. C. Clement, A. Couture, J. M. O’Donnell, R. C. Haight, Toshihiko Kawano, R. Reifarth, R. S. Rundberg, J. L. Ullmann, David Vieira, J. B. Wilhelmy, J.M. Wouters, U. Agvaanluvsan, W. Parker, C. Y. Wu, J. A. Becker	2008	56
7	Neutron Yields from Stopping- and Near-Stopping-Length Targets for 256-MeV Protons Nuclear Science and Engineering ·M. M. Meier, C.A. Goulding, G. L. Morgan, J. L. Ullmann	1990	48
8	Evidence for the stochastic aspect of promptγemission in spontaneous fission Physical Review C ·A. Chyzh, C. Y. Wu, E. Kwan, R. Henderson, J. M. Gostic, T. A. Bredeweg, R. C. Haight, A. C. Hayes, M. Jändel, J. M. O’Donnell, J. L. Ullmann	2012	43
9	GEANT4 simulations of the DANCE array Nuclear Instruments and Methods in Physics Research Section B Beam Interactions with Materials and Atoms ·M. Jändel, T. A. Bredeweg, A. Couture, M. M. Fowler, E. M. Bond, M. B. Chadwick, R. R. C. Clement, Ernst Esch, J. M. O’Donnell, R. Reifarth, R. S. Rundberg, J. L. Ullmann, D. J. Vieira, J. B. Wilhelmy, J.M. Wouters, R. A. Macri, C. Y. Wu, J. A. Becker	2007	42
10	πp elastic scattering from 67 to 139 MeV Physical Review C ·J. Brack, J.J. Kraushaar, J. H. Mitchell, R. J. Peterson, R. A. Ristinen, J. L. Ullmann, D. R. Gill, Richard R. Johnson, D. Ottewell, F. M. Rozon, M. E. Sevior, G. R. Smith, F. Tervisidis, R. P. Trelle, E. L. Mathie	1986	40
11	Measurement of neutron elastic scattering cross sections forC12,Ca40, andPb208at energies from65to225MeV Physical Review C ·J. H. Osborne, F.P. Brady, J. L. Romero, J. L. Ullmann, D. S. Sorenson, A. Ling, N. S. P. King, R. C. Haight, J. Rapaport, R.W. Finlay, E. Bauge, J. P. Delaroche, A. J. Koning	2004	39
12	Estimation of M1 scissors mode strength for deformed nuclei in the medium- to heavy-mass region by statistical Hauser-Feshbach model calculations Physical review. C ·Matthew R. Mumpower, Toshihiko Kawano, J. L. Ullmann, M. Krtička, T. M. Sprouse	2017	37
13	Excitation of analogue isovector resonances via the (n,p) reaction at 60 MeV Journal of Physics G Nuclear Physics ·F.P. Brady, G.A. Needham, J. L. Ullmann, C.M. Castaneda, T. D. Ford, N. S. P. King, J. L. Romero, M. L. Webb, Virginia Brown, C. H. Poppe	1984	36
14	The Prompt Fission Neutron Spectrum of 235 U( n , f ) below 2.5 MeV for Incident Neutrons from 0.7 to 20 MeV Nuclear Data Sheets ·M. Devlin, J.A. Gómez, Keegan Kelly, R. C. Haight, J. M. O’Donnell, T.N. Taddeucci, Hye Young Lee, S. Mosby, B. A. Perdue, Ν. Fotiades, J. L. Ullmann, C. Y. Wu, B. Bucher, Matthew Buckner, R. Henderson, Denise Neudecker, Morgan White, P. Talou, Michael Rising, Clell J Solomon	2018	36
15	Cross section andγ-ray spectra forU238(n,γ) measured with the DANCE detector array at the Los Alamos Neutron Science Center Physical Review C ·J. L. Ullmann, Toshihiko Kawano, T. A. Bredeweg, A. Couture, R. C. Haight, M. Jändel, J. M. O’Donnell, R. S. Rundberg, D. J. Vieira, J. B. Wilhelmy, J. A. Becker, A. Chyzh, C. Y. Wu, B. Baramsai, G. E. Mitchell, M. Krtička	2014	36
16	Double differential inclusive hydrogen and helium spectra from neutron-induced reactions on carbon at 27.4, 39.7, and 60.7 MeV Physical Review C ·T. S. Subramanian, J. L. Romero, F. P. Brady, J. W. Watson, D. H. Fitzgerald, R. Garrett, G.A. Needham, J. L. Ullmann, Claudio I. Zanelli, D. J. Brenner, R. E. Prael	1983	34
17	Acquisition-analysis system for the DANCE (detector for advanced neutron capture experiments) BaF/sub 2/ gamma-ray calorimeter IEEE Transactions on Nuclear Science ·J.M. Wouters, António A. Vicente, T. A. Bredeweg, Ernst Esch, R. C. Haight, R. Hatarik, J. M. O’Donnell, R. Reifarth, R. S. Rundberg, Jon M. Schwantes, S. A. Sheets, J. L. Ullmann, D.J. Vieira, J. B. Wilhelmy	2006	34
18	Multiple-scattering Corrections to Measurements of the Prompt Fission Neutron Spectrum Nuclear Data Sheets ·T.N. Taddeucci, R. C. Haight, Hye Young Lee, Denise Neudecker, J. M. O’Donnell, Morgan White, B. A. Perdue, M. Devlin, Nikolaos Fotiadis, J. L. Ullmann, R. O. Nelson, T. A. Bredeweg, Michael Rising, Sky Sjue, S.A. Wender, C. Y. Wu, R. Henderson	2015	33
19	New Precision Measurements of theU235(n,γ)Cross Section Physical Review Letters ·M. Jändel, T. A. Bredeweg, E. M. Bond, M. B. Chadwick, A. Couture, J. M. O’Donnell, M. M. Fowler, R. C. Haight, Toshihiko Kawano, R. Reifarth, R. S. Rundberg, J. L. Ullmann, D. J. Vieira, J.M. Wouters, J. B. Wilhelmy, C. Y. Wu, J. A. Becker	2012	31
20	Cross sections from proton irradiation of thorium at 800 MeV Physical Review C ·Jonathan W. Engle, S. G. Mashnik, John W. Weidner, Laura E. Wolfsberg, Michael E. Fassbender, Kevin Jackman, A. Couture, Leo Bitteker, J. L. Ullmann, M. S. Gulley, C. Pillai, Kevin D. John, Eva R. Birnbaum, F.M. Nortier	2013	31

About J. L. Ullmann

J. L. Ullmann is a scholar working on Radiation, Nuclear and High Energy Physics, Aerospace Engineering, Atomic and Molecular Physics, and Optics and Condensed Matter Physics, having authored 188 papers that have together received 2.4k indexed citations. Recurring topics across this work include Nuclear Physics and Applications (140 papers), Nuclear physics research studies (107 papers), Nuclear reactor physics and engineering (98 papers), Radiation Detection and Scintillator Technologies (35 papers), Physics of Superconductivity and Magnetism (15 papers), Atomic and Subatomic Physics Research (15 papers), Advanced NMR Techniques and Applications (15 papers) and Radiation Therapy and Dosimetry (13 papers). The work is most often cited by research in Radiation (1.3k citations), Nuclear and High Energy Physics (1.3k citations), Aerospace Engineering (973 citations), Condensed Matter Physics (338 citations) and Atomic and Molecular Physics, and Optics (356 citations). J. L. Ullmann has collaborated with scholars based in United States, Czechia and France. Frequent co-authors include T. A. Bredeweg, R. C. Haight, J. M. O’Donnell, A. Couture, M. Jändel, L. Krusin‐Elbaum, N. S. P. King, J. R. Thompson, J. L. Romero and R. S. Rundberg. Their work appears in journals such as Physical review. C, Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment, Nuclear Data Sheets, Nuclear Physics A and Physical Review Letters.

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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