{{Short description|American plasma physicist}} {{autobiography|date=May 2018}} {{Infobox scientist | name = Jose A. Boedo | fields = Physics | workplaces = University of California, San Diego | alma_mater = University of Texas at Austin Universidad Simon Bolivar, Venezuela | known_for = Divertors of Tokamaks }}

'''Jose A. Boedo''' is a Spanish plasma physicist and a researcher at University of California, San Diego.<ref>{{Cite web |url=http://profiles.ucsd.edu/jose.boedo |title=Jose Boedo |publisher=ucsd.edu |accessdate=April 20, 2017}}</ref> He was elected as a fellow of the American Physical Society in 2016 for "his ground-breaking contributions to the studies of plasma drifts and intermittent plasma transport in the peripheral region of tokamaks".<ref>{{Cite web|title=APS Fellow Archive|url=https://www.aps.org/programs/honors/fellowships/archive-all.cfm?initial=&year=2016&unit_id=DPP&institution=University+of+California%2C+San+Diego|access-date=2021-07-10|website=American Physical Society|language=en}}</ref>

Boedo has worked in the characteristics, particle and energy transport, and dynamics of the edge and scrape-off layer and divertors of tokamaks, a candidate device for fusion energy. These works have focused on intermittent transport<ref>{{Cite journal |doi = 10.1088/0741-3335/44/6/308|title = Fluctuation-driven transport in the DIII-D boundary|journal = Plasma Physics and Controlled Fusion|volume = 44|issue = 6|pages = 717–731|year = 2002|last1 = Rudakov|first1 = D. L.|last2 = Boedo|first2 = J. A.|last3 = Moyer|first3 = R. A.|last4 = Krasheninnikov|first4 = S.|last5 = Leonard|first5 = A. W.|last6 = Mahdavi|first6 = M. A.|last7 = McKee|first7 = G. R.|last8 = Porter|first8 = G. D.|last9 = Stangeby|first9 = P. C.|last10 = Watkins|first10 = J. G.|last11 = West|first11 = W. P.|last12 = Whyte|first12 = D. G.|last13 = Antar|first13 = G.|bibcode = 2002PPCF...44..717R| s2cid=250856939 }}</ref> and the role of cross-phase in transport modulation by velocity shear.<ref name="ReferenceA">{{Cite journal |doi = 10.1088/0029-5515/42/2/301|title = Scaling of plasma turbulence suppression with velocity shear|journal = Nuclear Fusion|volume = 42|issue = 2|pages = 117–121|year = 2002|last1 = Boedo|first1 = J.A|last2 = Gray|first2 = D.S|last3 = Terry|first3 = P.W|last4 = Jachmich|first4 = S.|last5 = Tynan|first5 = G.R|last6 = Conn|first6 = R.W|bibcode = 2002NucFu..42..117B| s2cid=121617614 }}</ref>

== Early life and career == Boedo received his Ph.D. from the University of Texas at Austin.<ref name=":1">{{Cite web|last=ORCID|title=Jose Boedo (0000-0003-2230-4112)|url=https://orcid.org/0000-0003-2230-4112|access-date=2021-07-10|website=orcid.org|language=en}}</ref> In 1990, he joined UCLA as a researcher in the mechanical and aerospace engineering department. In 1995, he moved to the University of California, San Diego and has been there ever since.<ref name=":1" />

==Scientific contributions== {{Technical|section|date=February 2024}}

Early in his career, Boedo investigated the role of externally imposed electric fields on tokamak plasmas and the corresponding velocity shear in the suppression of turbulence. Boedo characterized the reduction of transport<ref name="ReferenceB">{{Cite journal | doi=10.1063/1.1340023| title=Robust Langmuir probe circuitry for fusion research| journal=Review of Scientific Instruments| volume=72| issue=2| pages=1379| year=2001| last1=Boedo| first1=J.| last2=Gunner| first2=G.| last3=Gray| first3=D.| last4=Conn| first4=R.| bibcode=2001RScI...72.1379B}}</ref> and compared the scaling of the suppression with known theories.<ref name="ReferenceA" /> Additionally, he showed that velocity shear also reduced temperature fluctuations,<ref>{{Cite journal |doi = 10.1103/PhysRevLett.84.2630|title = Suppression of Temperature Fluctuations and Energy Barrier Generation by Velocity Shear|journal = Physical Review Letters|volume = 84|issue = 12|pages = 2630–2633|year = 2000|last1 = Boedo|first1 = J. A.|last2 = Terry|first2 = P. W.|last3 = Gray|first3 = D.|last4 = Ivanov|first4 = R. S.|last5 = Conn|first5 = R. W.|last6 = Jachmich|first6 = S.|last7 = Van Oost|first7 = G.|last8 = The Textor Team|pmid = 11017286|bibcode = 2000PhRvL..84.2630B|url = http://juser.fz-juelich.de/record/45419/files/6913.pdf}}</ref> and therefore, the conductive heat flux.<ref>{{Cite book|chapter-url=http://www.thermopedia.com/content/1033/|chapter = PLASMA| doi=10.1615/AtoZ.p.plasma | title=A-to-Z Guide to Thermodynamics, Heat and Mass Transfer, and Fluids Engineering | year=2006 | last1=Biberman | first1=M. L. | isbn=0-8493-9356-6 }}</ref>

Boedo investigated the effect that injected impurities on tokamak plasmas in producing enhanced energy confinement, known as the I-mode. He showed that the enhancement in performance was due to reduction in transport and turbulence due to ITG mode suppression.<ref>{{Cite journal|last1=Boedo|first1=J|last2=Gray|first2=D|last3=Jachmich|first3=S|last4=Conn|first4=R|last5=Terry|first5=G.P|last6=Tynan|first6=G|last7=Oost|first7=G. Van|last8=Weynants|first8=R.R|last9=Team|first9=Textor|date=2000|title=Enhanced particle confinement and turbulence reduction due to E B shear in the TEXTOR tokamak|url=https://iopscience.iop.org/article/10.1088/0029-5515/40/7/309|journal=Nuclear Fusion|volume=40|issue=7|pages=1397–1410|doi=10.1088/0029-5515/40/7/309|s2cid=250781276|issn=0029-5515|url-access=subscription}}</ref>

Boedo has also done work on the role of flows and drifts in the edge, SOL (scrape-off layer), and divertor of tokamaks. He found that once the divertor plasma is detached, there is a considerable residual heat flux that is convected by the plasma to the walls via large, Mach=1 large scale flows.<ref>{{Cite journal |doi = 10.1063/1.873168|title = Flow reversal, convection, and modeling in the DIII-D divertor|journal = Physics of Plasmas|volume = 5|issue = 12|pages = 4305–4310|year = 1998|last1 = Boedo|first1 = J. A.|last2 = Porter|first2 = G. D.|last3 = Schaffer|first3 = M. J.|last4 = Lehmer|first4 = R.|last5 = Moyer|first5 = R. A.|last6 = Watkins|first6 = J. G.|last7 = Evans|first7 = T. E.|last8 = Lasnier|first8 = C. J.|last9 = Leonard|first9 = A. W.|last10 = Allen|first10 = S. L.|bibcode = 1998PhPl....5.4305B}}</ref>

Boedo has shown that the effect of ExB drifts in the SOL and divertor plasmas is significant, and therefore edge simulation codes such as UEDGE and SOLPS should include drifts to properly model the boundary plasma.<ref name=":0" /> Boedo worked closely with modelers in experiment-modeling efforts to demonstrate the relevance of the drifts.<ref name=":0">{{Cite journal |doi = 10.1063/1.873915|title = Electric field-induced plasma convection in tokamak divertors|journal = Physics of Plasmas|volume = 7|issue = 4|pages = 1075–1078|year = 2000|last1 = Boedo|first1 = J. A.|last2 = Schaffer|first2 = M. J.|last3 = Maingi|first3 = R.|last4 = Lasnier|first4 = C. J.|bibcode = 2000PhPl....7.1075B|s2cid = 3551201}}</ref>

In the late 1990s, it was found in the Alcator C-Mod tokamak that plasma-wall contact was much larger than expected, revealing missing transport mechanism/physics in the edge/SOL in tokamaks.<ref name="digital.library.wisc.edu">{{Cite journal |doi = 10.1063/1.1406940|title = Transport by intermittent convection in the boundary of the DIII-D tokamak|journal = Physics of Plasmas|volume = 8|issue = 11|pages = 4826–4833|year = 2001|last1 = Boedo|first1 = J. A.|last2 = Rudakov|first2 = D.|last3 = Moyer|first3 = R.|last4 = Krasheninnikov|first4 = S.|last5 = Whyte|first5 = D.|last6 = McKee|first6 = G.|last7 = Tynan|first7 = G.|last8 = Schaffer|first8 = M.|last9 = Stangeby|first9 = P.|last10 = West|first10 = P.|last11 = Allen|first11 = S.|last12 = Evans|first12 = T.|last13 = Fonck|first13 = R.|last14 = Hollmann|first14 = E.|last15 = Leonard|first15 = A.|last16 = Mahdavi|first16 = A.|last17 = Porter|first17 = G.|last18 = Tillack|first18 = M.|last19 = Antar|first19 = G.|bibcode = 2001PhPl....8.4826B|url = http://digital.library.wisc.edu/1793/10476|doi-access = free}}</ref> Boedo and his colleagues then quantified, characterized and experimentally demonstrated that plasma was carried form the plasma edge towards the SOL and the chamber walls by intermittent, convective transport that was subsequently identified as resulting from the interchange instability.<ref name="digital.library.wisc.edu"/> As theoretical understanding of the subject improves,<ref>{{Cite journal |doi = 10.1063/1.2048847|title = Edge instability regimes with applications to blob transport and the quasicoherent mode|journal = Physics of Plasmas|volume = 12|issue = 9|pages = 092511|year = 2005|last1 = Myra|first1 = J. R.|last2 = d'Ippolito|first2 = D. A.|bibcode = 2005PhPl...12i2511M|s2cid = 54721128}}</ref> Boedo has continued to research the topic,<ref>{{Cite journal |doi = 10.1063/1.4873390|title = Edge transport studies in the edge and scrape-off layer of the National Spherical Torus Experiment with Langmuir probes|journal = Physics of Plasmas|volume = 21|issue = 4|pages = 042309|year = 2014|last1 = Boedo|first1 = J. A.|last2 = Myra|first2 = J. R.|last3 = Zweben|first3 = S.|last4 = Maingi|first4 = R.|last5 = Maqueda|first5 = R. J.|last6 = Soukhanovskii|first6 = V. A.|last7 = Ahn|first7 = J. W.|last8 = Canik|first8 = J.|last9 = Crocker|first9 = N.|last10 = d'Ippolito|first10 = D. A.|last11 = Bell|first11 = R.|last12 = Kugel|first12 = H.|last13 = Leblanc|first13 = B.|last14 = Roquemore|first14 = L. A.|last15 = Rudakov|first15 = D. L.|bibcode = 2014PhPl...21d2309B}}</ref> particularly on the scaling of intermittent transport with plasma parameters.<ref>{{Cite journal |doi = 10.1063/1.5038019|title = Filamentary velocity scaling validation in the TCV tokamak|journal = Physics of Plasmas|volume = 25|issue = 7|pages = 072506|year = 2018|last1 = Tsui|first1 = C. K.|last2 = Boedo|first2 = J. A.|last3 = Myra|first3 = J. R.|last4 = Duval|first4 = B.|last5 = Labit|first5 = B.|last6 = Theiler|first6 = C.|last7 = Vianello|first7 = N.|last8 = Vijvers|first8 = W. A. J.|last9 = Reimerdes|first9 = H.|last10 = Coda|first10 = S.|last11 = Février|first11 = O.|last12 = Harrison|first12 = J. R.|last13 = Horacek|first13 = J.|last14 = Lipschultz|first14 = B.|last15 = Maurizio|first15 = R.|last16 = Nespoli|first16 = F.|last17 = Sheikh|first17 = U.|last18 = Verhaegh|first18 = K.|last19 = Walkden|first19 = N.|bibcode = 2018PhPl...25g2506T|s2cid = 125360507|url = http://infoscience.epfl.ch/record/257986/files/Filamentary%20Velocity%20Scaling%20Validation%20in%20the%20TCV%20Tokamak.pdf}}</ref>

Boedo also developed tools to study and characterize Edge Localized Modes (ELMs) at high time resolution. Boedo quantified the ELM-mediated particle and heat transport that among other results, highlighted the two-dimensional nature of the phenomena as filaments and discovered that such filaments have a complex structure.<ref>{{Cite journal|last1=Boedo|first1=J. A.|last2=Rudakov|first2=D. L.|last3=Hollmann|first3=E.|last4=Gray|first4=D. S.|last5=Burrell|first5=K. H.|last6=Moyer|first6=R. A.|last7=McKee|first7=G. R.|last8=Fonck|first8=R.|last9=Stangeby|first9=P. C.|last10=Evans|first10=T. E.|last11=Snyder|first11=P. B.|date=2005|title=Edge-localized mode dynamics and transport in the scrape-off layer of the DIII-D tokamak|url=http://aip.scitation.org/doi/10.1063/1.1949224|journal=Physics of Plasmas|language=en|volume=12|issue=7|pages=072516|doi=10.1063/1.1949224|bibcode=2005PhPl...12g2516B|issn=1070-664X|url-access=subscription}}</ref>

Boedo's recent work has been focused on the physics of intrinsic rotation in tokamaks and asymmetric, thermal ion loss as a significant mechanism in determining a source of rotation at the edge of the plasma that is then transported into the core.<ref name="ReferenceC">{{Cite journal |doi = 10.1063/1.4962683|title = Experimental evidence of edge intrinsic momentum source driven by kinetic ion loss and edge radial electric fields in tokamaks|journal = Physics of Plasmas|volume = 23|issue = 9|pages = 092506|year = 2016|last1 = Boedo|first1 = J. A.|last2 = Degrassie|first2 = J. S.|last3 = Grierson|first3 = B.|last4 = Stoltzfus-Dueck|first4 = T.|last5 = Battaglia|first5 = D. J.|last6 = Rudakov|first6 = D. L.|last7 = Belli|first7 = E. A.|author7-link=Emily Belli|last8 = Groebner|first8 = R. J.|last9 = Hollmann|first9 = E.|last10 = Lasnier|first10 = C.|last11 = Solomon|first11 = W. M.|last12 = Unterberg|first12 = E. A.|last13 = Watkins|first13 = J.|bibcode = 2016PhPl...23i2506B|osti = 1325841}}</ref> Boedo identified and characterized the edge rotation from a theoretical point of view<ref>{{Cite journal |doi = 10.1063/1.4928558|title = Thermal ion orbit loss and radial electric field in DIII-D|journal = Physics of Plasmas|volume = 22|issue = 8|pages = 080701|year = 2015|last1 = Degrassie|first1 = J. S.|last2 = Boedo|first2 = J. A.|last3 = Grierson|first3 = B. A.|bibcode = 2015PhPl...22h0701D|osti = 1350067}}</ref> and compared it to existing models.<ref>{{Cite journal |doi = 10.1063/1.3605041|title = Intrinsic rotation generation in ELM-free H-mode plasmas in the DIII-D tokamak—Experimental observations|journal = Physics of Plasmas|volume = 18|issue = 7|pages = 072504|year = 2011|last1 = Müller|first1 = S. H.|last2 = Boedo|first2 = J. A.|last3 = Burrell|first3 = K. H.|last4 = Degrassie|first4 = J. S.|last5 = Moyer|first5 = R. A.|last6 = Rudakov|first6 = D. L.|last7 = Solomon|first7 = W. M.|last8 = Tynan|first8 = G. R.|bibcode = 2011PhPl...18g2504M}}</ref>

Boedo has also made contributions towards the diagnostic development for plasmas. He has developed high heat flux, fixed<ref name="ReferenceB"/> and reciprocating, scanning probes, such as that built for the NSTX tokamak,<ref>{{Cite journal |doi = 10.1063/1.3266065|title = Fast scanning probe for the NSTX spherical tokamak|journal = Review of Scientific Instruments|volume = 80|issue = 12|pages = 123506–123506–10|year = 2009|last1 = Boedo|first1 = J. A.|last2 = Crocker|first2 = N.|last3 = Chousal|first3 = L.|last4 = Hernandez|first4 = R.|last5 = Chalfant|first5 = J.|last6 = Kugel|first6 = H.|last7 = Roney|first7 = P.|last8 = Wertenbaker|first8 = J.|pmid = 20073119|bibcode = 2009RScI...80l3506B|doi-access = free}}</ref> a rotating Langmuir probe, and also a diagnostic to measure electron temperature with better than 400 kHz bandwidth.<ref>{{Cite journal |doi = 10.1063/1.1149888|title = On the harmonic technique to measure electron temperature with high time resolution|journal = Review of Scientific Instruments|volume = 70|issue = 7|pages = 2997–3006|year = 1999|last1 = Boedo|first1 = J. A.|last2 = Gray|first2 = D.|last3 = Conn|first3 = R. W.|last4 = Luong|first4 = P.|last5 = Schaffer|first5 = M.|last6 = Ivanov|first6 = R. S.|last7 = Chernilevsky|first7 = A. V.|last8 = Van Oost|first8 = G.|bibcode = 1999RScI...70.2997B}}</ref>

==References== {{Reflist}}

{{Authority control}}

{{DEFAULTSORT:Boedo, Jose A.}} Category:Year of birth missing (living people) Category:Living people Category:Fellows of the American Physical Society Category:21st-century American physicists Category:American plasma physicists Category:University of Texas at Austin alumni Category:Simón Bolívar University (Venezuela) alumni Category:University of California, San Diego faculty