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dc.contributor.authorReinke, M.L.
dc.contributor.authorDelgado-Aparicio, L.
dc.contributor.authorScott, S.D.
dc.contributor.authorRice, John E
dc.contributor.authorGao, Chi
dc.contributor.authorHoward, Nathaniel Thomas
dc.contributor.authorChilenski, Mark Alan
dc.contributor.authorGranetz, Robert S
dc.contributor.authorGreenwald, Martin J
dc.contributor.authorHubbard, Amanda E
dc.contributor.authorHughes Jr, Jerry
dc.contributor.authorIrby, James Henderson
dc.contributor.authorLin, Yijun
dc.contributor.authorMarmar, Earl S
dc.contributor.authorMumgaard, Robert Thomas
dc.contributor.authorTerry, James L
dc.contributor.authorWalk Jr, John R
dc.contributor.authorWhite, Anne E.
dc.contributor.authorWhyte, Dennis G
dc.contributor.authorWolfe, Stephen M
dc.contributor.authorWukitch, Stephen James
dc.date.accessioned2017-05-08T18:55:16Z
dc.date.available2017-05-08T18:55:16Z
dc.date.issued2015-02
dc.date.submitted2014-12
dc.identifier.issn0029-5515
dc.identifier.issn1741-4326
dc.identifier.urihttp://hdl.handle.net/1721.1/108753
dc.description.abstractCore impurity transport has been investigated for a variety of confinement regimes in Alcator C-Mod plasmas from x-ray emission following injection of medium and high Z materials. In ohmic L-mode discharges, impurity transport is anomalous (D[subscript eff] ≫ D[subscript nc]) and changes very little across the LOC/SOC boundary. In ion cyclotron range of frequencies (ICRF) heated L-mode plasmas, the core impurity confinement time decreases with increasing ICRF input power (and subsequent increasing electron temperature) and increases with plasma current. Nearly identical impurity confinement characteristics are observed in I-mode plasmas. In enhanced D[subscript α] H-mode discharges the core impurity confinement times are much longer. There is a strong connection between core impurity confinement time and the edge density gradient across all confinement regimes studied here. Deduced central impurity density profiles in stationary plasmas are generally flat, in spite of large amplitude sawtooth oscillations, and there is little evidence of impurity convection inside of r/a = 0.3 when averaged over sawteeth.en_US
dc.description.sponsorshipUnited States. Department of Energy (Contract DE-FC02-99ER54512)en_US
dc.description.sponsorshipUnited States. Dept. of Energy. Fusion Energy Postdoctoral Research Program (Oak Ridge Institute for Science and Education)en_US
dc.language.isoen_US
dc.publisherIOP Publishingen_US
dc.relation.isversionofhttp://dx.doi.org/10.1088/0029-5515/55/3/033014en_US
dc.rightsCreative Commons Attribution-Noncommercial-Share Alikeen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/4.0/en_US
dc.sourceProf. Whyte via Chris Sherratten_US
dc.titleCore impurity transport in Alcator C-Mod L-, I- and H-mode plasmasen_US
dc.typeArticleen_US
dc.identifier.citationRice, J.E. et al. “Core Impurity Transport in Alcator C-Mod L-, I- and H-Mode Plasmas.” Nuclear Fusion 55.3 (2015): 033014.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Physicsen_US
dc.contributor.departmentMassachusetts Institute of Technology. Plasma Science and Fusion Centeren_US
dc.contributor.approverWhyte Dennisen_US
dc.contributor.mitauthorRice, John E
dc.contributor.mitauthorGao, Chi
dc.contributor.mitauthorHoward, Nathaniel Thomas
dc.contributor.mitauthorChilenski, Mark Alan
dc.contributor.mitauthorGranetz, Robert S
dc.contributor.mitauthorGreenwald, Martin J
dc.contributor.mitauthorHubbard, Amanda E
dc.contributor.mitauthorHughes Jr, Jerry
dc.contributor.mitauthorIrby, James Henderson
dc.contributor.mitauthorLin, Yijun
dc.contributor.mitauthorMarmar, Earl S
dc.contributor.mitauthorMumgaard, Robert Thomas
dc.contributor.mitauthorTerry, James L
dc.contributor.mitauthorWalk Jr, John R
dc.contributor.mitauthorWhite, Anne E.
dc.contributor.mitauthorWhyte, Dennis G
dc.contributor.mitauthorWolfe, Stephen M
dc.contributor.mitauthorWukitch, Stephen James
dc.relation.journalNuclear Fusionen_US
dc.eprint.versionOriginal manuscripten_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/NonPeerRevieweden_US
dspace.orderedauthorsRice, J.E.; Reinke, M.L.; Gao, C.; Howard, N.T.; Chilenski, M.A.; Delgado-Aparicio, L.; Granetz, R.S.; Greenwald, M.J.; Hubbard, A.E.; Hughes, J.W.; Irby, J.H.; Lin, Y.; Marmar, E.S.; Mumgaard, R.T.; Scott, S.D.; Terry, J.L.; Walk, J.R.; White, A.E.; Whyte, D.G.; Wolfe, S.M.; Wukitch, S.J.en_US
dspace.embargo.termsNen_US
dc.identifier.orcidhttps://orcid.org/0000-0001-8319-5971
dc.identifier.orcidhttps://orcid.org/0000-0002-9604-204X
dc.identifier.orcidhttps://orcid.org/0000-0002-0026-6939
dc.identifier.orcidhttps://orcid.org/0000-0002-3616-8484
dc.identifier.orcidhttps://orcid.org/0000-0002-4438-729X
dc.identifier.orcidhttps://orcid.org/0000-0002-5283-0546
dc.identifier.orcidhttps://orcid.org/0000-0002-3757-7730
dc.identifier.orcidhttps://orcid.org/0000-0001-8324-4227
dc.identifier.orcidhttps://orcid.org/0000-0003-2951-9749
dc.identifier.orcidhttps://orcid.org/0000-0002-9001-5606
mit.licenseOPEN_ACCESS_POLICYen_US
mit.metadata.statusComplete


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