Magnetic Trapping of Cold Methyl Radicals

Abstract

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Cold collisions of heavy Σ2 molecules with alkali-metal atoms in a magnetic field: Ab initio analysis and prospects for sympathetic cooling of SrOH(Morita1, Kłos2, Buchachenko3 et al. 2017Phys. Rev. A252441View full textAdd to dashboardCite

“…Small polyatomic molecular radicals such as methylene (CH 2 ), methyl (CH 3 ), and amidogen (NH 2 ) were found to have small spin relaxation cross sections with S-state atoms, and hence suggested as promising candidates for sympathetic cooling experiments in a magnetic trap [30,31]. Magnetic trapping of CH 3 radicals has been accomplished in a recent experiment [32].…”

“…Cooling and trapping polyatomic molecular radicals is expected to provide new insights into many-mode vibrational dynamics, photochemistry, and chemical reactivity at ultralow temperatures [20,[30][31][32][35][36][37] [20,36].…”

Role of Minerals in Hydrogen Sulfide Generation during Steam-Assisted Recovery of Heavy Oil

“…Thus, molecules in a MOT must be transferred into a conservative trap where the lifetime can be long, the quantum state can be selected and preserved, and the phase-space density can be increased, for example, by sympathetic, evaporative, or Raman sideband cooling. Magnetic traps have been crucial for exploiting ultracold atoms, and they have previously been used to confine molecules produced at ∼100 mK by buffer-gas cooling and Stark and Zeeman deceleration [26][27][28][29][30][31][32][33]. Here, we demonstrate coherent control and magnetic trapping of laser-cooled molecules, which are key steps towards the applications discussed above.…”

Zeeman deceleration beyond periodic phase space stability

“…The precise control of the velocity of beams of atoms and molecules using Stark and Zeeman decelerators has led to multiple benefits in a range of fields spanning atomic and molecular physics, including high resolution spectroscopy [1][2][3], quantum-state resolved collisional scattering [4][5][6], lifetime measurements [7,8] and the exploration and exploitation of properties of cold matter [9][10][11][12][13]. Travelling-wave Zeeman decelerators have seen the velocities of paramagnetic species manipulated by confining these species in a true three-dimensional travelling well [14,15], with Zeeman-decelerated species also successfully loaded into magnetic traps [16,17]. For all such applications, the optimisation of the density and number of particles in the decelerated beam is an important factor contributing to the experimental viability, in addition to attaining a narrow velocity distribution.…”