{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,1]],"date-time":"2026-03-01T10:28:22Z","timestamp":1772360902808,"version":"3.50.1"},"reference-count":44,"publisher":"IOP Publishing","issue":"6","license":[{"start":{"date-parts":[[2016,4,27]],"date-time":"2016-04-27T00:00:00Z","timestamp":1461715200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/iopscience.iop.org\/page\/copyright"},{"start":{"date-parts":[[2016,4,27]],"date-time":"2016-04-27T00:00:00Z","timestamp":1461715200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/iopscience.iop.org\/info\/page\/text-and-data-mining"}],"content-domain":{"domain":["iopscience.iop.org"],"crossmark-restriction":false},"short-container-title":["Nucl. Fusion"],"published-print":{"date-parts":[[2016,6,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>In hybrid plasma operation in JET with its ITER-like wall (JET-ILW) it is found that <jats:italic>n<\/jats:italic>\u2009\u2009&gt;\u2009\u20091 tearing activity can significantly enhance the rate of on-axis peaking of high-<jats:italic>Z<\/jats:italic> impurities, which in turn significantly degrades discharge performance. Core <jats:italic>n<\/jats:italic>\u2009\u2009=\u2009\u20091 instabilities can be beneficial in removing impurities from the plasma core (e.g. sawteeth or fishbones), but can conversely also degrade core confinement (particularly in combination with simultaneous <jats:italic>n<\/jats:italic>\u2009\u2009=\u2009\u20093 activity). The nature of magnetohydrodynamic instabilities in JET hybrid discharges, with both its previous carbon wall and subsequent JET-ILW, is surveyed statistically and the character of the instabilities is examined. Possible qualitative models for how the <jats:italic>n<\/jats:italic>\u2009\u2009&gt;\u2009\u20091 islands can enhance the on-axis impurity transport accumulation processes are presented.<\/jats:p>","DOI":"10.1088\/0029-5515\/56\/6\/066002","type":"journal-article","created":{"date-parts":[[2016,4,27]],"date-time":"2016-04-27T09:15:32Z","timestamp":1461748532000},"page":"066002","update-policy":"https:\/\/doi.org\/10.1088\/crossmark-policy","source":"Crossref","is-referenced-by-count":46,"title":["The role of MHD in causing impurity peaking in JET hybrid plasmas"],"prefix":"10.1088","volume":"56","author":[{"given":"T.C.","family":"Hender","sequence":"first","affiliation":[]},{"given":"P.","family":"Buratti","sequence":"additional","affiliation":[]},{"given":"F.J.","family":"Casson","sequence":"additional","affiliation":[]},{"given":"B.","family":"Alper","sequence":"additional","affiliation":[]},{"given":"Yu. 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