Magnetic trapping and Zeeman relaxation of imidogen (NH X-triplet-Sigma)

Abstract

Imidogen (NH) radicals are magnetically trapped and their Zeeman relaxation and energy transport collision cross sections with helium are measured. Continuous buffer-gas loading of the trap is direct from a room-temperature molecular beam. The Zeeman relaxation (inelastic) cross section of magnetically trapped electronic, vibrational and rotational ground state imidogen in collisions with He-3 is measured to be 3.8 +/- 1.1 E-19 cm^2 at 710 mK. The NH-He energy transport cross section is also measured, indicating a ratio of diffusive to inelastic cross sections of gamma = 7 E4 in agreement with the recent theory of Krems et al. (PRA 68 051401(R) (2003))

12 pages, 3 figures

References in corpus (12)

• Quantum computation with trapped polar molecules
• A toolbox for lattice spin models with polar molecules
• Atom--Molecule Coherence in a Bose-Einstein Condensate
• Optical Production of Ultracold Polar Molecules
• Quo vadis, cold molecules? - Editorial review
• Molecules Near Absolute Zero and External Field Control of Atomic and Molecular Dynamics
• Ultracold Rb-OH collisions and prospects for sympathetic cooling
• Continuous loading of an electrostatic trap for polar molecules
• Suppression of inelastic collisions of polar ${}^1\Sigma$ state molecules in an electrostatic field
• Production and deceleration of a pulsed beam of metastable NH ($a^1\Delta$) radicals
• Rotational Feshbach Resonances in Ultracold Molecular Collisions
• Magnetic trapping of buffer-gas cooled chromium atoms and prospects for the extension to paramagnetic molecules

Cited by in corpus (63)

• Cold and Ultracold Molecules: Science, Technology, and Applications
• The Buffer Gas Beam: An Intense, Cold, and Slow Source for Atoms and Molecules
• Manipulation of Molecules with Electromagnetic Fields
• Magneto-Optical Trap for Polar Molecules
• Formation and interactions of cold and ultracold molecules: new challenges for interdisciplinary physics
• Repulsive shield between polar molecules
• Low-energy molecular collisions in a permanent magnetic trap
• Cold Atoms and Molecules in Self-Assembled Dipolar Lattices
• Cold heteromolecular dipolar collisions
• Laser slowing of CaF molecules to near the capture velocity of a molecular MOT
• Production of ultracold NH molecules by sympathetic cooling with Mg
• Intense Atomic and Molecular Beams via Neon Buffer Gas Cooling
• A new method for producing ultracold molecular ions
• Electrostatic trapping of metastable NH molecules
• Neutral gas sympathetic cooling of an ion in a Paul trap
• Magnetic Trapping of Molecules via Optical Loading and Magnetic Slowing
• Scattering lengths in isotopologues of the RbYb system
• Quantum reactive scattering of ultracold NH($X{}^3{\Sigma }^{-}$) radicals in a magnetic trap
• Time-Domain Measurement of Spontaneous Vibrational Decay of Magnetically Trapped NH
• Trapping of molecular Oxygen together with Lithium atoms
• Mechanism of Collisional Spin Relaxation in Triplet-Sigma Molecules
• Quantum Simulations of Extended Hubbard Models with Dipolar Crystals
• Ultracold spin-polarized mixtures of 2Sigma molecules with S-state atoms: Collisional stability and implications for sympathetic cooling
• Quantum theory of chemical reactions in the presence of electromagnetic fields
• The prospects of sympathetic cooling of NH molecules with Li atoms
• Ab initio potential energy surfaces for NH-NH with analytical long range
• Magnetic trapping of atomic nitrogen (14^N) and cotrapping of NH (X-triplet-Sigma-)
• Mitigation of loss within a molecular Stark decelerator
• Prospects for sympathetic cooling of polar molecules: NH with alkali-metal and alkaline-earth atoms - a new hope
• Cold and ultracold NH--NH collisions in magnetic fields
• Cold collisions of N atoms and NH molecules in magnetic fields
• Formation of van der Waals molecules in buffer gas cooled magnetic traps
• Atomic Rydberg Reservoirs for Polar Molecules
• Atom-molecule collisions, spin relaxation, and sympathetic cooling in an ultracold spin-polarized Rb(${}^2\mathrm{S}$)-SrF${(}^2{\Sigma }^{+})$ mixture
• Cold guided beams of water isotopologs
• MARVEL analysis of the measured high-resolution spectra of ${}^{14}$NH
• Efficient method for quantum calculations of molecule - molecule scattering properties in a magnetic field
• Dynamics of OH(2Pi)-He collisions in combined electric and magnetic fields
• Doppler-free laser spectroscopy of buffer gas cooled molecular radicals
• Cold and ultracold NH--NH collisions: The field-free case
• Sensitive imaging of electromagnetic fields with paramagnetic polar molecules
• Loss of molecules in magneto-electrostatic traps due to nonadiabatic transitions
• Structure and melting behavior of classical bilayer crystals of dipoles
• Molecular Collisions: from Near-cold to Ultra-cold
• Multistage Zeeman deceleration of NH $X{}^3{\Sigma }^{-}$ radicals
• One dimensional magneto-optical compression of a cold CaF molecular beam
• Ab Initio Study of Chemical Reactions of Cold SrF and CaF Molecules with Alkali-Metal and Alkaline-Earth-Metal Atoms
• Photostop: Production of zero-velocity molecules by photodissociation in a molecular beam
• On the role of the magnetic dipolar interaction in cold and ultracold collisions: Numerical and analytical results for NH(${}^3{\Sigma }^{-}$) + NH(${}^3{\Sigma }^{-}$)
• Ultracold hydrogen atoms: a versatile coolant to produce ultracold molecules
• Total angular momentum representation for atom-molecule collisions in electric fields
• Æ codes
• Theory of cavity-assisted microwave cooling of polar molecules
• Ion-assisted ground-state cooling of a trapped polar molecule
• Multivalent optical cycling centers in polyatomic molecules
• Cold collisions of polyatomic molecular radicals with S-state atoms in a magnetic field: An ab initio study of He + CH2(X) collisions
• Dynamics of a buffer-gas-loaded, deep optical trap for molecules
• Zeeman Relaxation of Cold Atomic Iron and Nickel in Collisions with 3He
• Elastic and inelastic collisions of ${}^2\Sigma$ molecules in a magnetic field
• Selective quantum Zeno effect of ultracold atom-molecule scattering in dynamic magnetic fields
• Measurements of trap dynamics of cold OH molecules using resonance enhanced multiphoton ionization
• Theoretical study of the quenching of NH (singlet Delta) molecules via collisions with Rb atoms: preliminary results
• Highly spin-polarized molecules via collisional microwave pumping