caa a22 4500 445867442 CHVBK 20180317145502.0 cr unu---uuuuu 170323e20111101xx s 000 0 eng 10.1140/epjd/e2011-20082-7 doi (NATIONALLICENCE)springer-10.1140/epjd/e2011-20082-7 Accumulation of Stark-decelerated NH molecules in a magnetic trap [Elektronische Daten] [J. Riedel, S. Hoekstra, W. Jäger, J. Gilijamse, S. van de Meerakker, G. Meijer] Here we report on the accumulation of ground-state NH molecules in a static magnetic trap. A pulsed supersonic beam of NH (a1Δ) radicals is produced and brought to a near standstill at the center of a quadrupole magnetic trap using a Stark decelerator. There, optical pumping of the metastable NH radicals to the X3Σ− ground state is performed by driving the spin-forbidden A3Π ← a1Δ transition, followed by spontaneous A → X emission. The resulting population in the various rotational levels of the ground state is monitored via laser induced fluorescence detection. A substantial fraction of the ground-state NH molecules stays confined in the several milliKelvin deep magnetic trap. The loading scheme allows one to increase the phase-space density of trapped molecules by accumulating packets from consecutive deceleration cycles in the trap. In the present experiment, accumulation of six packets is demonstrated to result in an overall increase of only slightly over a factor of two, limited by the trap-loss and reloading rates. EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg, 2011 Riedel J. Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany aut Hoekstra S. Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany aut Jäger W. Department of Chemistry, University of Alberta, T6G 2G2, Edmonton, Alberta, Canada aut Gilijamse J. Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany aut van de Meerakker S. Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany aut Meijer G. Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany aut The European Physical Journal D Springer-Verlag 65/1-2(2011-11-01), 161-166 1434-6060 65:1-2<161 2011 65 10053 https://doi.org/10.1140/epjd/e2011-20082-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1140/epjd/e2011-20082-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Riedel J. Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany aut NATIONALLICENCE 700 1- Hoekstra S. Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany aut NATIONALLICENCE 700 1- Jäger W. Department of Chemistry, University of Alberta, T6G 2G2, Edmonton, Alberta, Canada aut NATIONALLICENCE 700 1- Gilijamse J. Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany aut NATIONALLICENCE 700 1- van de Meerakker S. Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany aut NATIONALLICENCE 700 1- Meijer G. Fritz-Haber-Institut der Max-Planck-Gesellschaft, Faradayweg 4-6, 14195, Berlin, Germany aut NATIONALLICENCE 773 0- The European Physical Journal D Springer-Verlag 65/1-2(2011-11-01), 161-166 1434-6060 65:1-2<161 2011 65 10053 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer