Noah Hershkowitz

Noah Hershkowitz (August 16, 1941 – November 13, 2020) was an American experimental plasma physicist.[1][2] He was known for his pioneering research on the understanding of plasma sheaths, solitons and double layers in plasmas,[3] as well as the development of the emissive probe which measures the plasma potential (i.e. the electric potential within a plasma sheath).[4][5][6]

Noah Hershkowitz
Born(1941-08-16)August 16, 1941
New York City, New York
DiedNovember 13, 2020(2020-11-13) (aged 79)
Madison, Wisconsin
NationalityAmerican
EducationUnion College (B.S.)
Johns Hopkins University (Ph.D.)
Awards
Scientific career
FieldsPlasma physics
ThesisMössbauer Effect of the Second Excited State of Fe57. (1966)
Doctoral advisorJames Calvin Walker

In 2004, Hershkowitz was co-awarded the 2004 James Clerk Maxwell Prize for Plasma Physics for his contributions to the field of low-temperature plasmas.[7] He was also awarded the 2015 IEEE Marie Sklodowska-Curie Award for his research and education of basic and applied plasma science.[8]

Early life and career

Hershkowitz obtained a bachelor's degree from Union College in 1962 and a Ph.D. in physics from Johns Hopkins University in 1966. Upon graduation, Hershkowitz remained at the university to become an instructor in physics until 1967, where he was employed as assistant professor at the University of Iowa until 1980. During this time between 1974 and 1975, he was a visiting professor at the University of California, Los Angeles. Between 1980 and 1981, he was a visiting professor at the University of Colorado, Boulder. In 1981, he became a professor at the University of Wisconsin-Madison, and was the Irving Langmuir Professor of Engineering Physics.[9]

In 1992, Hershkowitz founded the journal Plasma Sources Science and Technology as the editor-in-chief.[5]

Scientific contributions

Hershkowitz' work on low temperature plasmas included radio frequency wave heating,[10][11] sheath physics,[12] potential profiles,[13] diagnostic probes[14][15] and the industrial applications of plasmas.

His work also has applications in magnetic confinement fusion (e.g. tokamaks, magnetic mirrors).[16][17]

Honors and awards

Hershkowitz has been a fellow of the American Physical Society and the IEEE since 1981.

In 2004, Hershkowitz was jointly awarded the James Clerk Maxwell Prize for Plasma Physics with Valery Godyak for his research on low-temperature plasmas.[7] In 2015, he received the IEEE Marie Sklodowska-Curie Award for "innovative research and inspiring education in basic and applied plasma science".[8]

References
  1. "Hershkowitz, Noah - UW-Engineering Directory | College of Engineering @ The University of Wisconsin-Madison". Retrieved February 27, 2020.
  2. "Noah Hershkowitz Obituary - Madison, WI | Madison.com". www.legacy.com. Archived from the original on November 18, 2020. Retrieved November 18, 2020.
  3. Hershkowitz, Noah; Romesser, Thomas (1974). "Observations of Ion-Acoustic Cylindrical Solitons". Physical Review Letters. 32 (11): 581–583. Bibcode:1974PhRvL..32..581H. doi:10.1103/PhysRevLett.32.581.
  4. Smith, J. R.; Hershkowitz, N.; Coakley, P. (February 1, 1979). "Inflection‐point method of interpreting emissive probe characteristics". Review of Scientific Instruments. 50 (2): 210–218. doi:10.1063/1.1135789. ISSN 0034-6748. PMID 18699471.
  5. "Tribute to Prof. Noah Hershkowitz". mipse.umich.edu. November 15, 2020. Archived from the original on November 18, 2020. Retrieved November 18, 2020.
  6. "Hershkowitz receives inaugural IEEE TPS award for plasma science research". College of Engineering - University of Wisconsin-Madison. September 26, 2019. Retrieved November 18, 2020.
  7. "2004 James Clerk Maxwell Prize for Plasma Physics Recipient". American Physical Society. Retrieved February 27, 2020.
  8. "IEEE Marie Sklodowska-Curie Award". www.ieee.org. Retrieved November 18, 2020.
  9. "Hershkowitz, N. (Noah), 1941-". history.aip.org. Retrieved February 27, 2020.
  10. Intrator, T.; Probert, P. H.; Vukovic, M.; Wukitch, S.; Elfimov, A.; Durst, R.; Breun, R. A.; Brouchous, D.; Diebold, D.; Doczy, M.; Fonck, R. (1996). "Alfvén ion–ion hybrid wave heating in the Phaedrus‐T tokamak". Physics of Plasmas. 3 (4): 1331–1339. Bibcode:1996PhPl....3.1331I. doi:10.1063/1.871786. ISSN 1070-664X.
  11. Sheehan, J. P.; Barnat, E. V.; Weatherford, B. R.; Kaganovich, I. D.; Hershkowitz, N. (2014). "Emissive sheath measurements in the afterglow of a radio frequency plasma" (PDF). Physics of Plasmas. 21 (1): 013510. Bibcode:2014PhPl...21a3510S. doi:10.1063/1.4861888. ISSN 1070-664X. S2CID 16251078.
  12. Hershkowitz, Noah (2005). "Sheaths: More complicated than you think". Physics of Plasmas. 12 (5): 055502. Bibcode:2005PhPl...12e5502H. doi:10.1063/1.1887189. ISSN 1070-664X.
  13. Hershkowitz, Noah (1985). "Review of recent laboratory double layer experiments". Space Science Reviews. 41 (3): 351–391. Bibcode:1985SSRv...41..351H. doi:10.1007/BF00190655. ISSN 1572-9672. S2CID 120426051.
  14. Smith, J. R.; Hershkowitz, N.; Coakley, P. (1979). "Inflection‐point method of interpreting emissive probe characteristics". Review of Scientific Instruments. 50 (2): 210–218. Bibcode:1979RScI...50..210S. doi:10.1063/1.1135789. ISSN 0034-6748. PMID 18699471.
  15. Koo, Bon-Woong; Hershkowitz, Noah; Sarfaty, Moshe (1999). "Langmuir probe in low temperature, magnetized plasmas: Theory and experimental verification". Journal of Applied Physics. 86 (3): 1213–1220. Bibcode:1999JAP....86.1213K. doi:10.1063/1.370873. ISSN 0021-8979.
  16. Intrator, T.; Probert, P.; Wukitch, S.; Vukovic, M.; Brouchous, D.; Diebold, D.; Breun, R.; Doczy, M.; Edgell, D.; Elfimov, A.; Hershkowitz, N. (1995). "Alfvén wave current drive in the Phaedrus‐T tokamak". Physics of Plasmas. 2 (6): 2263–2271. Bibcode:1995PhPl....2.2263I. doi:10.1063/1.871249. ISSN 1070-664X.
  17. Hatakeyama, R.; Hershkowitz, N.; Majeski, R.; Wen, Y. J.; Brouchous, D. B.; Proberts, P.; Breun, R. A.; Roberts, D.; Vukovic, M.; Tanaka, T. (1997). "Measurements on rotating ion cyclotron range of frequencies induced particle fluxes in axisymmetric mirror plasmas". Physics of Plasmas. 4 (8): 2947–2954. Bibcode:1997PhPl....4.2947H. doi:10.1063/1.872427. ISSN 1070-664X.

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