Patrick O’Keeffe

3.2k total citations · 1 hit paper
126 papers, 2.1k citations indexed

About

Patrick O’Keeffe is a scholar working on Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering and Materials Chemistry. According to data from OpenAlex, Patrick O’Keeffe has authored 126 papers receiving a total of 2.1k indexed citations (citations by other indexed papers that have themselves been cited), including 61 papers in Atomic and Molecular Physics, and Optics, 37 papers in Electrical and Electronic Engineering and 31 papers in Materials Chemistry. Recurrent topics in Patrick O’Keeffe's work include Advanced Chemical Physics Studies (47 papers), Atomic and Molecular Physics (24 papers) and Mass Spectrometry Techniques and Applications (15 papers). Patrick O’Keeffe is often cited by papers focused on Advanced Chemical Physics Studies (47 papers), Atomic and Molecular Physics (24 papers) and Mass Spectrometry Techniques and Applications (15 papers). Patrick O’Keeffe collaborates with scholars based in Italy, Japan and Germany. Patrick O’Keeffe's co-authors include Daniele Catone, L. Avaldi, Alessandra Paladini, Stefano Turchini, P. Bolognesi, Shuji Komuro, Marcello Coreno, Takitaro Morikawa, M. Brouard and Francesco Toschi and has published in prestigious journals such as Physical Review Letters, Nature Communications and The Journal of Chemical Physics.

In The Last Decade

Patrick O’Keeffe

122 papers receiving 2.0k 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.

A Sense of Belonging: Improving Student Retention.

2013 340 citations Patrick O’Keeffe College student journal profile →

Peers — A (Enhanced Table)

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

Name	h						Papers	Cites
Patrick O’Keeffe Italy	24	890	523	475	392	236	126	2.1k
Brad R. Weiner Puerto Rico	32	507 0.6×	1.9k 3.6×	840 1.8×	327 0.8×	661 2.8×	179	3.3k
David M. Hanson United States	23	1.2k 1.3×	489 0.9×	291 0.6×	471 1.2×	76 0.3×	106	1.8k
Gary Bruno Schmid Germany	23	430 0.5×	783 1.5×	321 0.7×	63 0.2×	268 1.1×	92	1.7k
S. H. Southworth United States	33	2.2k 2.5×	528 1.0×	271 0.6×	560 1.4×	134 0.6×	146	3.1k
John H. Holloway United Kingdom	25	472 0.5×	578 1.1×	97 0.2×	218 0.6×	129 0.5×	188	2.6k
Bridget M. Murphy Germany	24	419 0.5×	530 1.0×	388 0.8×	32 0.1×	238 1.0×	95	2.0k
H. Ishida Japan	34	1.7k 1.9×	827 1.6×	708 1.5×	37 0.1×	112 0.5×	143	3.2k
Charles H. Patterson Ireland	31	1.1k 1.3×	1.3k 2.5×	1.2k 2.4×	208 0.5×	632 2.7×	109	3.6k
David Lichtman United States	26	496 0.6×	942 1.8×	931 2.0×	99 0.3×	201 0.9×	93	2.8k
Robert P. Bauman United States	16	548 0.6×	1.3k 2.6×	804 1.7×	149 0.4×	257 1.1×	53	2.4k

Countries citing papers authored by Patrick O’Keeffe

Since Specialization

Citations

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

Fields of papers citing papers by Patrick O’Keeffe

Since Specialization

Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Patrick O’Keeffe. 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 Patrick O’Keeffe. The network helps show where Patrick O’Keeffe may publish in the future.

Co-authorship network of co-authors of Patrick O’Keeffe

This figure shows the co-authorship network connecting the top 25 collaborators of Patrick O’Keeffe. A scholar is included among the top collaborators of Patrick O’Keeffe 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 Patrick O’Keeffe. Patrick O’Keeffe 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

Turchini, Stefano, Francesco Toschi, Patrick O’Keeffe, et al.. (2025). Electron‐Hole Separation Dynamics and Optoelectronic Properties of a PCE10:FOIC Blend. Small. 21(34). e2505063–e2505063. 1 indexed citations

Catone, Daniele, Patrick O’Keeffe, Alessandra Paladini, et al.. (2023). Dynamics of the Bulk-to-Topological State Scattering of Photoexcited Carriers in Bi₂Se₃ Thin Films. ACS Applied Electronic Materials. 5(8). 4643–4649. 5 indexed citations

Catone, Daniele, Patrick O’Keeffe, Francesco Toschi, et al.. (2023). Electron-hole liquid formation in formamidinium lead bromide perovskite FAPbBr3. Physical review. B.. 108(19). 2 indexed citations

Fratoddi, Ilaria, Chiara Battocchio, Giovanna Iucci, et al.. (2021). Silver Nanoparticles Functionalized by Fluorescein Isothiocyanate or Rhodamine B Isothiocyanate: Fluorescent and Plasmonic Materials. Applied Sciences. 11(6). 2472–2472. 21 indexed citations

Ovcharenko, Yevheniy, Aaron LaForge, Bruno Langbehn, et al.. (2020). Autoionization dynamics of helium nanodroplets resonantly excited by intense XUV laser pulses. New Journal of Physics. 22(8). 83043–83043. 11 indexed citations

Bolognesi, P., Patrick O’Keeffe, Robert Richter, et al.. (2020). Inner shell photofragmentation of 2Cl-pyrimidine studied by mass spectrometry and electron–ion coincidence experiments. Journal of Physics B Atomic Molecular and Optical Physics. 53(24). 244004–244004. 2 indexed citations

Ferrari, L., Mauro Satta, Amedeo Palma, et al.. (2019). A Fast Transient Absorption Study of Co(AcAc)3. Frontiers in Chemistry. 7. 348–348. 6 indexed citations

Castrovilli, Mattea Carmen, Andrea Trabattoni, P. Bolognesi, et al.. (2018). Ultrafast Hydrogen Migration in Photoionized Glycine. The Journal of Physical Chemistry Letters. 9(20). 6012–6016. 18 indexed citations

Fratoddi, Ilaria, Antonella Cartoni, Iole Venditti, et al.. (2017). Gold nanoparticles functionalized by rhodamine B isothiocyanate: A new tool to control plasmonic effects. Journal of Colloid and Interface Science. 513. 10–19. 47 indexed citations

10.

Gokhberg, Kirill, F. Stienkemeier, Nikolai V. Kryzhevoi, et al.. (2016). Enhanced Ionization of Embedded Clusters by Electron-Transfer-Mediated Decay in Helium Nanodroplets. Physical Review Letters. 116(20). 203001–203001. 32 indexed citations

11.

Mazza, Tommaso, Markus Ilchen, Patrick O’Keeffe, et al.. (2015). Sensitivity of nonlinear photoionization to resonance substructure in collective excitation. Nature Communications. 6(1). 6799–6799. 25 indexed citations

12.

O’Keeffe, Patrick, Elena V. Gryzlova, D. Cubaynes, et al.. (2013). Isotopically Resolved Photoelectron Imaging Unravels Complex Atomic Autoionization Dynamics by Two-Color Resonant Ionization. Physical Review Letters. 111(24). 243002–243002. 8 indexed citations

13.

O’Keeffe, Patrick. (2013). A Sense of Belonging: Improving Student Retention.. College student journal. 47(4). 605–613. 340 indexed citations breakdown →

14.

Peters, Thorsten, Thomas Halfmann, Stéphane Aloïse, et al.. (2006). Lineshapes of the even mp1/2 5n(p′/f′) autoionizing resonances of Ar, Kr and Xe. The European Physical Journal D. 40(2). 181–193. 17 indexed citations

15.

Aloïse, Stéphane, Patrick O’Keeffe, D. Cubaynes, M. Meyer, & Alexei N. Grum-Grzhimailo. (2005). Photoionization of Synchrotron-Radiation-Excited Atoms: Separating Partial Cross Sections by Full Polarization Control. Physical Review Letters. 94(22). 223002–223002. 18 indexed citations

16.

Brouard, M., I. Burak, Sarantos Marinakis, et al.. (2003). Cross Section for theH+H2OAbstraction Reaction: Experiment and Theory. Physical Review Letters. 90(9). 93201–93201. 23 indexed citations

17.

Brouard, M., et al.. (2001). NO Rotational Orientation Following 308 nm Photodissociation ofNO2. Physical Review Letters. 86(11). 2249–2252. 24 indexed citations

18.

Lewis, B. R., S. T. Gibson, Patrick O’Keeffe, et al.. (2001). Observation of Completely Destructive Quantum Interference between Interacting Resonances in Molecular Predissociation. Physical Review Letters. 86(8). 1478–1481. 4 indexed citations

19.

O’Keeffe, Patrick, et al.. (1995). Characterization and in situ monitoring of a novel compact electron cyclotron resonance plasma source. Review of Scientific Instruments. 66(11). 5252–5256. 7 indexed citations

20.

O’Keeffe, Patrick, et al.. (1991). Development and Applications of a Compact Electron Cyclotron Resonance Source. Japanese Journal of Applied Physics. 30(11S). 3164–3164. 26 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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