Cold collisions of Stark decelerated ND $_{3}$ molecules and magnetically trapped $^{87}$ Rb atomsCold collisions of Stark decelerated ND$_{3}$ molecules and magnetically trapped $^{87}$Rb atoms

Noah J. Fitch, Lambert Paul Parazzoli, Dan Lobser +1 more

Bulletin of the American Physical SocietyMay 20, 20090 citations

Collisions of co-trapped cold OH molecules with ultracold rubidium

Yomay Shyur, Travis Briles, Heather J. Lewandowski

APSMay 1, 20130 citations

Towards cold collisions between dipolar OH and ND $_{3}$ molecules within a permanent magnetic trapTowards cold collisions between dipolar OH and ND$_{3}$ molecules within a permanent magnetic trap

Brian C. Sawyer, Benjamin Stuhl, Mark Yeo +2 more

Bulletin of the American Physical SocietyMay 21, 20090 citations

Population transfer collisions involving nD Rydberg atoms in a CO $_{2}$ optical dipole trapPopulation transfer collisions involving nD Rydberg atoms in a CO$_{2}$ optical dipole trap

Jorge Douglas Massayuki Kondo, Luís F. Gonçalves, Jonathan Tallant +1 more

Bulletin of the American Physical SocietyJun 5, 20140 citations

Low-energy collisions of NH3 and ND3 with ultracold Rb atoms

Piotr Szymon Żuchowski, Jeremy M. Hutson

We carry out quantum inelastic scattering calculations of collisions of Rb atoms with inverting ${\text{NH}}_{3}$ and ${\text{ND}}_{3}$ molecules in the energy range between 0 and $100\text{ }{\text{cm}}^{\ensuremath{-}1}$, which are important for experiments using velocity-controlled molecular beams to probe scattering resonances. We focus on molecules initially in the upper level of the ammonia inversion doublet for $j=1$ , $k=1$ , which is low-field seeking and can be controlled in a Stark decelerator. We calculate the integral elastic and state-to-state inelastic cross sections in the coupled-states approximation. We demonstrate the presence of both shape and Feshbach resonances in the elastic and inelastic cross sections at low collision energies and discuss their origin in terms of the bound states of the Rb- ${\text{ND}}_{3}$ complex. We also consider elastic and inelastic cross sections in the ultracold regime, using close-coupling calculations, in order to assess the viability of sympathetic cooling of ${\text{ND}}_{3}$ by Rb. The inelastic cross section for relaxation to the lower level of the inversion doublet is smaller than expected for such a strongly coupled system but is still likely to be too large to allow sympathetic cooling for ${\text{ND}}_{3}$ in low-field-seeking states. However, there is a good prospect that sympathetic cooling will be possible for molecules in high-field-seeking states even when the collision partner is a magnetically trapped atom in a low-field-seeking state.We carry out quantum inelastic scattering calculations of collisions of Rb atoms with inverting ${\text{NH}}_{3}$ and ${\text{ND}}_{3}$ molecules in the energy range between 0 and $100\text{ }{\text{cm}}^{\ensuremath{-}1}$, which are important for experiments using velocity-controlled molecular beams to probe scattering resonances. We focus on molecules initially in the upper level of the ammonia inversion doublet for $j=1$, $k=1$, which is low-field seeking and can be controlled in a Stark decelerator. We calculate the integral elastic and state-to-state inelastic cross sections in the coupled-states approximation. We demonstrate the presence of both shape and Feshbach resonances in the elastic and inelastic cross sections at low collision energies and discuss their origin in terms of the bound states of the Rb-${\text{ND}}_{3}$ complex. We also consider elastic and inelastic cross sections in the ultracold regime, using close-coupling calculations, in order to assess the viability of sympathetic cooling of ${\text{ND}}_{3}$ by Rb. The inelastic cross section for relaxation to the lower level of the inversion doublet is smaller than expected for such a strongly coupled system but is still likely to be too large to allow sympathetic cooling for ${\text{ND}}_{3}$ in low-field-seeking states. However, there is a good prospect that sympathetic cooling will be possible for molecules in high-field-seeking states even when the collision partner is a magnetically trapped atom in a low-field-seeking state.

arXiv:0902.4548Physical Review AJun 11, 200957 citations

Magnetic Trapping and Collisions of Ultracold Rb 2 Molecules

Changhyun Ryu, R. S. Freeland, W. Jaewoo Shim +1 more

APSMay 1, 20020 citations

Cold collision of co-trapped ND

_{3}

molecules and Rb atoms

Cold collisions of Stark decelerated ND

_{3}

molecules and magnetically trapped

^{87}

Rb atoms

Towards cold collisions between dipolar OH and ND

_{3}

molecules within a permanent magnetic trap

Population transfer collisions involving nD Rydberg atoms in a CO

_{2}

optical dipole trap

We carry out quantum inelastic scattering calculations of collisions of Rb atoms with inverting

{\text{NH}}_{3}

and

{\text{ND}}_{3}

molecules in the energy range between 0 and $100\text{ }{\text{cm}}^{\ensuremath{-}1}$, which are important for experiments using velocity-controlled molecular beams to probe scattering resonances. We focus on molecules initially in the upper level of the ammonia inversion doublet for

j=1

k=1

, which is low-field seeking and can be controlled in a Stark decelerator. We calculate the integral elastic and state-to-state inelastic cross sections in the coupled-states approximation. We demonstrate the presence of both shape and Feshbach resonances in the elastic and inelastic cross sections at low collision energies and discuss their origin in terms of the bound states of the Rb-

{\text{ND}}_{3}

complex. We also consider elastic and inelastic cross sections in the ultracold regime, using close-coupling calculations, in order to assess the viability of sympathetic cooling of

{\text{ND}}_{3}

by Rb. The inelastic cross section for relaxation to the lower level of the inversion doublet is smaller than expected for such a strongly coupled system but is still likely to be too large to allow sympathetic cooling for

{\text{ND}}_{3}

in low-field-seeking states. However, there is a good prospect that sympathetic cooling will be possible for molecules in high-field-seeking states even when the collision partner is a magnetically trapped atom in a low-field-seeking state.