Collisional relaxation of vibrational states of SrOH with He at 2 K
Vibrational relaxation of strontium monohydroxide (SrOH) molecules in collisions with helium (He) at 2 K is studied. We find the diffusion cross section of SrOH at 2.2 K to be ${{\sigma }_{{\rm d}}}=(5\pm 2)\times {{10}^{-14}}\;{\rm c}{{{\rm m}}^{2}}$ and the vibrational quenching cross section for...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2015-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/17/4/045003 |
| _version_ | 1797751221312815104 |
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| author | Ivan Kozyryev Louis Baum Kyle Matsuda Peter Olson Boerge Hemmerling John M Doyle |
| author_facet | Ivan Kozyryev Louis Baum Kyle Matsuda Peter Olson Boerge Hemmerling John M Doyle |
| author_sort | Ivan Kozyryev |
| collection | DOAJ |
| description | Vibrational relaxation of strontium monohydroxide (SrOH) molecules in collisions with helium (He) at 2 K is studied. We find the diffusion cross section of SrOH at 2.2 K to be ${{\sigma }_{{\rm d}}}=(5\pm 2)\times {{10}^{-14}}\;{\rm c}{{{\rm m}}^{2}}$ and the vibrational quenching cross section for the (100) Sr–O stretching mode to be ${{\sigma }_{{\rm q}}}$ $\;=\;(7\pm 2)\times {{10}^{-17}}{\rm c}{{{\rm m}}^{2}}$ . The resulting ratio ${{\gamma }_{100}}$ $\;=\;{{\sigma }_{{\rm d}}}/{{\sigma }_{{\rm q}}}\sim 700$ is more than an order of magnitude smaller than for previously studied few-atom radicals (Au et al 2014 Phys. Rev. A http://dx.doi.org/10.1103/PhysRevA.90.032703 90 http://dx.doi.org/10.1103/PhysRevA.90.032703 ). We also determine the Franck–Condon factor for SrOH ( ${{\tilde{A}}^{2}}{{\Pi }_{1/2}}(100)\leftarrow {{\tilde{X}}^{2}}{{\Sigma }^{+}}(000)$ ) to be $(4.8\pm 0.8)\times {{10}^{-2}}$ . |
| first_indexed | 2024-03-12T16:45:25Z |
| format | Article |
| id | doaj.art-480020ec9a1d408baa7f7fda6ce95708 |
| institution | Directory Open Access Journal |
| issn | 1367-2630 |
| language | English |
| last_indexed | 2024-03-12T16:45:25Z |
| publishDate | 2015-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj.art-480020ec9a1d408baa7f7fda6ce957082023-08-08T14:16:08ZengIOP PublishingNew Journal of Physics1367-26302015-01-0117404500310.1088/1367-2630/17/4/045003Collisional relaxation of vibrational states of SrOH with He at 2 KIvan Kozyryev0Louis Baum1Kyle Matsuda2Peter Olson3Boerge Hemmerling4John M Doyle5Harvard-MIT Center for Ultracold Atoms, Cambridge, MA 02138, USA; Department of Physics, Harvard University , Cambridge, MA 02138, USAHarvard-MIT Center for Ultracold Atoms, Cambridge, MA 02138, USA; Department of Physics, Harvard University , Cambridge, MA 02138, USAHarvard-MIT Center for Ultracold Atoms, Cambridge, MA 02138, USA; Department of Physics, Harvard University , Cambridge, MA 02138, USAHarvard-MIT Center for Ultracold Atoms, Cambridge, MA 02138, USAHarvard-MIT Center for Ultracold Atoms, Cambridge, MA 02138, USA; Department of Physics, Harvard University , Cambridge, MA 02138, USAHarvard-MIT Center for Ultracold Atoms, Cambridge, MA 02138, USA; Department of Physics, Harvard University , Cambridge, MA 02138, USAVibrational relaxation of strontium monohydroxide (SrOH) molecules in collisions with helium (He) at 2 K is studied. We find the diffusion cross section of SrOH at 2.2 K to be ${{\sigma }_{{\rm d}}}=(5\pm 2)\times {{10}^{-14}}\;{\rm c}{{{\rm m}}^{2}}$ and the vibrational quenching cross section for the (100) Sr–O stretching mode to be ${{\sigma }_{{\rm q}}}$ $\;=\;(7\pm 2)\times {{10}^{-17}}{\rm c}{{{\rm m}}^{2}}$ . The resulting ratio ${{\gamma }_{100}}$ $\;=\;{{\sigma }_{{\rm d}}}/{{\sigma }_{{\rm q}}}\sim 700$ is more than an order of magnitude smaller than for previously studied few-atom radicals (Au et al 2014 Phys. Rev. A http://dx.doi.org/10.1103/PhysRevA.90.032703 90 http://dx.doi.org/10.1103/PhysRevA.90.032703 ). We also determine the Franck–Condon factor for SrOH ( ${{\tilde{A}}^{2}}{{\Pi }_{1/2}}(100)\leftarrow {{\tilde{X}}^{2}}{{\Sigma }^{+}}(000)$ ) to be $(4.8\pm 0.8)\times {{10}^{-2}}$ .https://doi.org/10.1088/1367-2630/17/4/045003buffer-gas coolingvibrational quenchingcold polyatomic molecules |
| spellingShingle | Ivan Kozyryev Louis Baum Kyle Matsuda Peter Olson Boerge Hemmerling John M Doyle Collisional relaxation of vibrational states of SrOH with He at 2 K New Journal of Physics buffer-gas cooling vibrational quenching cold polyatomic molecules |
| title | Collisional relaxation of vibrational states of SrOH with He at 2 K |
| title_full | Collisional relaxation of vibrational states of SrOH with He at 2 K |
| title_fullStr | Collisional relaxation of vibrational states of SrOH with He at 2 K |
| title_full_unstemmed | Collisional relaxation of vibrational states of SrOH with He at 2 K |
| title_short | Collisional relaxation of vibrational states of SrOH with He at 2 K |
| title_sort | collisional relaxation of vibrational states of sroh with he at 2 k |
| topic | buffer-gas cooling vibrational quenching cold polyatomic molecules |
| url | https://doi.org/10.1088/1367-2630/17/4/045003 |
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