Now showing items 1-11 of 11

• #### Cold and Slow Molecular Beam ﻿

(Royal Society of Chemistry, 2011)
Employing a two-stage cryogenic buffer gas cell, we produce a cold, hydrodynamically extracted beam of calcium monohydride molecules with a near effusive velocity distribution. Beam dynamics, thermalization and slowing are ...
• #### A cold and slow molecular beam ﻿

(Royal Society of Chemistry (RSC), 2011)
Employing a two-stage cryogenic buffer gas cell, we produce a cold, hydrodynamically extracted beam of calcium monohydride molecules with a near effusive velocity distribution. Beam dynamics, thermalization and slowing are ...
• #### Cold N + NH Collisions in a Magnetic Trap ﻿

(American Physical Society, 2011)
We present an experimental and theoretical study of atom-molecule collisions in a mixture of cold, trapped N atoms and NH molecules at a temperature of ∼600  mK. We measure a small N + NH trap loss rate coefficient of ...
• #### Collisional Properties of Cold Spin-Polarized Nitrogen Gas: Theory, Experiment, and Prospects as a Sympathetic Coolant for Trapped Atoms and Molecules ﻿

(American Physical Society, 2010)
We report a combined experimental and theoretical study of collision-induced dipolar relaxation in a cold spin-polarized gas of atomic nitrogen (N). We use buffer gas cooling to create trapped samples of $^{14}$N and ...
• #### Magnetic Trapping of Atomic Nitrogen ($^{14}$N) and Cotrapping of NH ($X$$^{3}$$\Sigma$ -) ﻿

(American Physical Society, 2008)
We observe magnetic trapping of atomic nitrogen ($^{14}$N) and cotrapping of ground state imidogen ($^{14}$NH, $X$$^{3}$$\Sigma$ -). Both are loaded directly from a room temperature beam via buffer gas cooling. ...
• #### Magnetic trapping of atomic nitrogen (^14N) and cotrapping of NH (X-triplet-Sigma-) ﻿

(American Physical Society (APS), 2008)
We observe magnetic trapping of atomic nitrogen (N14) and cotrapping of ground-state imidogen (N14H, XΣ−3). Both are loaded directly from a room-temperature beam via buffer gas cooling. We trap approximately 1×1011 N14 ...
• #### Magnetic trapping of molecules via optical loading and magnetic slowing ﻿

(2014-02-25)
This thesis demonstrates a new cooling and trap loading technique for molecules, leading to trapping of calcium monofluoride (CaF).
• #### Magnetic Trapping of NH Molecules with 20 s Lifetimes ﻿

(Institute of Physics, 2010)
Buffer gas cooling is used to trap NH molecules with 1/e lifetimes exceeding 20 s. Helium vapor generated by laser desorption of a helium film is employed to thermalize 10$^5$ molecules at a temperature of 500 mK in a ...
• #### Mechanism of Collisional Spin Relaxation in $^3$Σ Molecules ﻿

(American Physical Society, 2009)
We measure and theoretically determine the effect of molecular rotational splitting on Zeeman relaxation rates in collisions of cold $^3$Σ molecules with helium atoms in a magnetic field. All four stable isotopomers of ...
• #### Spin-Orbit Suppression of Cold Inelastic Collisions of Aluminum and Helium ﻿

(American Physical Society (APS), 2013)
We present a quantitative study of suppression of cold inelastic collisions by the spin-orbit interaction. We prepare cold ensembles of $>10^{11} Al(^2P_{1/2})$ atoms via cryogenic buffer-gas cooling and use a single-beam ...
• #### Time-Domain Measurement of Spontaneous Vibrational Decay of Magnetically Trapped NH ﻿

(American Physical Society, 2008)
The $v = 1 \to 0$ radiative lifetime of $NH (X^3 \Sigma^-, v=1, N=0)$ is determined to be $\tau_{rad,\text{exp.}} = 37.0 \pm 0.5_{\text{stat}}{}^{+2.0} _{-0.8\text{syst}}$ miliseconds, corresponding to a transition ...