{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T10:58:14Z","timestamp":1753873094898,"version":"3.41.2"},"reference-count":17,"publisher":"AIP Publishing","issue":"3","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2012,3,1]]},"abstract":"<jats:p>A pinhole probe (PHP) for the simultaneous measurement of the parallel, T\u2225, and perpendicular, T\u22a5, ion temperature has been designed and tested in the scrape-off-layer (SOL) plasma of the tokamak ISTTOK. The PHP consists of a tunnel immersed into the plasma parallel to magnetic field and an ion collector. One end of the tunnel is covered with a thin foil that has a pinhole sampling ions from the plasma. The other end of the tunnel (close to the negatively biased collector) is covered with a fine-mesh screen. The possibility of performing an analytical description of the PHP current-to-voltage characteristics obtained on the collector when biasing the tunnel simplifies the interpretation of the results. The PHP operation has been previously tested in T\u2225, T\u22a5 measurements in low temperature weekly magnetized plasma [H. Mase, T. Honzava, and G. Miyamoto, J. Appl. Phys.\u200849(10), 5171 (1978)]10.1063\/1.324412. In this paper, the PHP operation in the SOL of the tokamak ISTTOK is described, and the first results of T\u2225 and T\u22a5 measurements are presented. The obtained results demonstrate strong (\u223c30%) variation of T\u2225 and T\u22a5 on a time scale of 0.5 ms, and general predominance of T\u2225 &amp;gt; T\u22a5 anisotropy (T\u2225mean\/T\u22a5mean \u223c 1.5) during plasma shot.<\/jats:p>","DOI":"10.1063\/1.3697447","type":"journal-article","created":{"date-parts":[[2012,3,24]],"date-time":"2012-03-24T23:46:35Z","timestamp":1332632795000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":3,"title":["Simultaneous measurements of the parallel and perpendicular ion temperature with a pinhole probe in the scrape-off-layer of the tokamak ISTTOK"],"prefix":"10.1063","volume":"83","author":[{"given":"I. S.","family":"Nedzelskiy","sequence":"first","affiliation":[{"name":"Universidade T\u00e9cnica Lisboa Associa\u00e7\u00e3o EURATOM\/IST, Instituto de Plasma e Fus\u00e3o Nuclear-Laborat\u00f3rio Associado, Instituto Superior T\u00e9cnico, , 1049-001 Lisboa, Portugal"}]},{"given":"C.","family":"Silva","sequence":"additional","affiliation":[{"name":"Universidade T\u00e9cnica Lisboa Associa\u00e7\u00e3o EURATOM\/IST, Instituto de Plasma e Fus\u00e3o Nuclear-Laborat\u00f3rio Associado, Instituto Superior T\u00e9cnico, , 1049-001 Lisboa, Portugal"}]},{"given":"P.","family":"Duarte","sequence":"additional","affiliation":[{"name":"Universidade T\u00e9cnica Lisboa Associa\u00e7\u00e3o EURATOM\/IST, Instituto de Plasma e Fus\u00e3o Nuclear-Laborat\u00f3rio Associado, Instituto Superior T\u00e9cnico, , 1049-001 Lisboa, Portugal"}]},{"given":"H.","family":"Fernandes","sequence":"additional","affiliation":[{"name":"Universidade T\u00e9cnica Lisboa Associa\u00e7\u00e3o EURATOM\/IST, Instituto de Plasma e Fus\u00e3o Nuclear-Laborat\u00f3rio Associado, Instituto Superior T\u00e9cnico, , 1049-001 Lisboa, Portugal"}]}],"member":"317","published-online":{"date-parts":[[2012,3,23]]},"reference":[{"key":"2023070314175574100_c1","doi-asserted-by":"publisher","first-page":"2243","DOI":"10.1088\/0022-3727\/17\/11\/011","volume":"17","year":"1984","journal-title":"J. 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