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waehrend至尊木虫 (知名作家)
水哥
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【招聘】PhD position in astrochemistry 已有3人参与
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Photodissociation and excitation of molecules in protoplanetary disks ===================================================================== Prof.dr. E.F. van Dishoeck Leiden Observatory, Leiden University, the Netherlands A 4-year PhD (AIO) position is available to study the photodissociation and excitation of astrophysically relevant small molecules in protoplanetary disks. The project is part of an interdisciplinary collaboration between astronomers and chemists in the context of the Dutch Astrochemistry Network. Determining the physical and chemical structure of planet-forming disks is a major goal of new large observational facilities such as the Atacama Large Millimeter Array (ALMA), the James Webb Space Telescope (JWST) and the European Extremely Large Telescope (E-ELT). Photodissociation of molecules in the upper layers of the disk is a key process in setting their chemical structure. The aim of the project is to investigate the chemical processes and integrate the resulting rates and product branching ratios into protoplanetary disk models. The model results will be compared with existing and future observational data. The initial focus will be on the N2 molecule, a key species in the nitrogen chemistry. Also, the excitation of molecules like CO and OH will be studied using newly determined collisional rate coefficients. Applications should include a curriculum vitae (with a list of grades for exams), a brief statement of research experience, and the names of at least two people who can serve as a reference. Selection of candidates will start on September 25 2010 and will continue until the position is filled. The positions are open to students of all nationalities with the equivalent of a Masters degree in astronomy, physics or chemistry. The starting date for the positions can be anytime up to March 2011. Please submit applications through: http://jobs.strw.leidenuniv.nl/2010/dishoeckAIO/ See www.strw.leidenuniv.nl/~ewine www.nwo.nl/astrochemistry www.nova-astronomy.nl for further information about Leiden Observatory, the Dutch PhD program and the Dutch Astrochemistry Network. The research is carried out in the framework of the Netherlands Research School for Astronomy (NOVA). |
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3楼2010-08-26 19:12:01
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