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Journal Article

Dissociative Recombination Measurements of NH+ Using an Ion Storage Ring

MPS-Authors
http://pubman.mpdl.mpg.de/cone/persons/resource/persons39264

Becker,  Arno
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons30417

Domesle,  C.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons30535

Grieser,  M.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons30715

Krantz,  C.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons30721

Kreckel,  H.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons30936

Repnow,  R.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons31023

Schwalm,  D
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
Institut für Atom- und Molekülphysik, Justus-Liebig-Universität Giessen, D-35392 Giessen, Germany ;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons39262

Spruck,  Kaija
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons31091

Stützel,  J
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
Columbia Astrophysics Laboratory, Columbia University, New York, NY 10027, USA ;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons31190

Wolf,  A.
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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Citation

Novotný, O., Becker, A., Buhr, H., Domesle, C., Geppert, W., Grieser, M., et al. (2014). Dissociative Recombination Measurements of NH+ Using an Ion Storage Ring. The Astrophysical Journal, 792(2): 132. doi:10.1088/0004-637X/792/2/132.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0025-690F-F
Abstract
We have investigated dissociative recombination (DR) of NH+ with electrons using a merged beams configuration at the TSR heavy-ion storage ring located at the Max Planck Institute for Nuclear Physics in Heidelberg, Germany. We present our measured absolute merged-beams recombination rate coefficient for collision energies from 0 to 12 eV. From these data, we have extracted a cross section, which we have transformed to a plasma rate coefficient for the collisional plasma temperature range from Tpl = 10 to 18,000 K. We show that the NH+ DR rate coefficient data in current astrochemical models are underestimated by up to a factor of approximately nine. Our new data will result in predicted NH+ abundances lower than those calculated by present models. This is in agreement with the sensitivity limits of all observations attempting to detect NH+ in interstellar clouds.