Quantum-state–selective electron recombination studies suggest enhanced 
abundance of primordial HeH+

Novotný, Oldřich; Wilhelm, Patrick; Paul, Daniel; Kalosi, Abel; Saurabh, Sunny; Becker, Arno; Blaum, Klaus; George, Sebastian; Göck, Jürgen; Grieser, Manfred; Grussie, Florian; von Hahn, Robert; Krantz, Claude; Kreckel, Holger; Meyer, Christian; Mishra, Preeti Manjari; Müll, Damian; Nüsslein, Felix; Orlov, Dmitry A.; Rimmler, Marius Matthias; Schmidt, Viviane Charlotte; Shornikov, Andrey; Terekhov , Aleksandr S.; Vogel, Stephen; Zajfman , Daniel; Wolf, Andreas

doi:10.1126/science.aax5921

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Quantum-state–selective electron recombination studies suggest enhanced abundance of primordial HeH⁺

MPS-Authors

/persons/resource/persons30857

Novotný, Oldřich
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons240699

Wilhelm, Patrick
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons214147

Paul, Daniel
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons214337

Kalosi, Abel
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
Faculty of Mathematics and Physics, Charles University, 18000 Praha, Czech Republic;

/persons/resource/persons192351

Saurabh, Sunny
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons39264

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

/persons/resource/persons30312

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

/persons/resource/persons30508

George, Sebastian
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;
Institut für Physik, Universität Greifswald, 17487 Greifswald, Germany;

/persons/resource/persons133085

Göck, Jürgen
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30535

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

/persons/resource/persons37581

Grussie, Florian
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons31148

von Hahn, Robert
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30715

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

/persons/resource/persons30721

Kreckel, Holger
Holger Kreckel, ASTROLAB - MPG-Gruppe im Anschluss an ERC Starting Grant, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons104745

Meyer, Christian
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons136169

Mishra, Preeti Manjari
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons217509

Müll, Damian
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons191702

Nüsslein, Felix
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons30866

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

/persons/resource/persons208835

Rimmler, Marius Matthias
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons224524

Schmidt, Viviane Charlotte
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons31043

Shornikov, Andrey
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons192348

Vogel, Stephen
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

/persons/resource/persons31190

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

External Resource

https://science.sciencemag.org/content/365/6454/676
(Publisher version)

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Novotný, O., Wilhelm, P., Paul, D., Kalosi, A., Saurabh, S., Becker, A., et al. (2019). Quantum-state–selective electron recombination studies suggest enhanced abundance of primordial HeH⁺. Science, 365(6454), 676-679. doi:10.1126/science.aax5921.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002B-A6F8-8

Abstract

The epoch of first star formation in the early Universe was dominated by simple atomic and molecular species consisting mainly of two elements: hydrogen and helium. Gaining insight into this constitutive era requires a thorough understanding of molecular reactivity under primordial conditions. We used a cryogenic ion storage ring combined with a merged electron beam to measure state-specific rate coefficients of dissociative recombination, a process by which electrons destroy molecular ions. We found a pronounced decrease of the electron recombination rates for the lowest rotational states of the helium hydride ion (HeH⁺), compared with previous measurements at room temperature. The reduced destruction of cold HeH⁺ translates into an enhanced abundance of this primordial molecule at redshifts of first star and galaxy formation.