{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T10:49:44Z","timestamp":1753872584358,"version":"3.41.2"},"reference-count":12,"publisher":"AIP Publishing","issue":"7","content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2007,7,1]]},"abstract":"<jats:p>We describe an experimental setup for supersonic jet expansions of supercritical fluids. It is characterized by well-defined thermodynamic values to allow systematic investigations of pressure and temperature effects on molecular beam parameters. The design permits stagnation temperatures T0=225\u2013425K with a thermal stability \u0394T0&amp;lt;30mK and stagnation pressures p0=0.2\u201312MPa that are measured with 0.05% precision. For optimum stability, gas reservoir, pressure transducer, and gauge amplifier are temperature-controlled, and a feedback loop permits active pressure stabilization using a pulseless syringe pump. With this approach stagnation pressures can be reproduced and kept constant to \u0394p0&amp;lt;2.9kPa. As a result, flow velocity and kinetic energy of molecular beams can be controlled with maximum accuracy.<\/jats:p>","DOI":"10.1063\/1.2756630","type":"journal-article","created":{"date-parts":[[2007,7,24]],"date-time":"2007-07-24T22:02:58Z","timestamp":1185314578000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":8,"title":["Precise thermodynamic control of high pressure jet expansions"],"prefix":"10.1063","volume":"78","author":[{"given":"Wolfgang","family":"Christen","sequence":"first","affiliation":[{"name":"Humboldt-Universit\u00e4t zu Berlin Institut f\u00fcr Chemie, , Brook-Taylor-Strasse 2, 12489 Berlin, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tim","family":"Krause","sequence":"additional","affiliation":[{"name":"Humboldt-Universit\u00e4t zu Berlin Institut f\u00fcr Chemie, , Brook-Taylor-Strasse 2, 12489 Berlin, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Klaus","family":"Rademann","sequence":"additional","affiliation":[{"name":"Humboldt-Universit\u00e4t zu Berlin Institut f\u00fcr Chemie, , Brook-Taylor-Strasse 2, 12489 Berlin, Germany"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"317","published-online":{"date-parts":[[2007,7,24]]},"reference":[{"key":"2023070500224341400_c1","doi-asserted-by":"crossref","DOI":"10.1007\/978-3-642-56800-8","volume-title":"Atomic and Molecular Beams","author":"Campargue","year":"2001"},{"volume-title":"Atom, Molecule, and Cluster Beams","year":"2000","key":"2023070500224341400_c2"},{"volume-title":"Atomic and Molecular Beam Methods","year":"1988","author":"Scoles","key":"2023070500224341400_c3"},{"key":"2023070500224341400_c4","doi-asserted-by":"publisher","first-page":"504","DOI":"10.1088\/0963-0252\/13\/3\/017","volume":"13","year":"2004","journal-title":"Plasma Sources Sci. 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