scholarly journals Adiabatic Mixed-Field Orientation of Ground-State-Selected Carbonyl Sulfide Molecules

ChemPhysChem ◽  
2016 ◽  
Vol 17 (22) ◽  
pp. 3740-3746 ◽  
Author(s):  
Jens S. Kienitz ◽  
Sebastian Trippel ◽  
Terry Mullins ◽  
Karol Długołęcki ◽  
Rosario González-Férez ◽  
...  
Keyword(s):  
Ground State ◽  
Carbonyl Sulfide ◽  
Field Orientation ◽  
Mixed Field

scholarly journals MAGMO: polarimetry of 1720-MHz OH masers towards southern star-forming regions

2020 ◽  
Vol 493 (1) ◽  
pp. 199-233 ◽  
Author(s):  
C S Ogbodo ◽  
J A Green ◽  
J R Dawson ◽  
S L Breen ◽  
S A Mao ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Star Formation ◽  
Ground State ◽  
Supernova Remnants ◽  
Galactic Centre ◽  
Galactic Magnetic Field ◽  
Field Orientation ◽  
Star Forming ◽  
Star Forming Regions ◽  
Methanol Masers

ABSTRACT From targeted observations of ground-state hydroxyl (OH) masers towards 702 Methanol Multibeam survey 6.7-GHz methanol masers, in the Galactic longitude range from 186° through the Galactic Centre to 20°, made as part of the ‘MAGMO’ (Mapping the Galactic Magnetic field through OH masers) project, we present the physical and polarization properties of the 1720-MHz OH maser transition, including the identification of Zeeman pairs. We present 10 new and 23 previously catalogued 1720-MHz OH maser sources detected towards star-forming regions (SFRs). In addition, we also detected 16 1720-MHz OH masers associated with supernova remnants and two sites of diffuse OH emission. Towards the 33 star formation masers, we identify 44 Zeeman pairs, implying magnetic field strengths ranging from −11.4 to +13.2 mG, and a median magnetic field strength of |BLOS| ∼ 6 mG. With limited statistics, we present the in situ magnetic field orientation of the masers and the Galactic magnetic field distribution revealed by the 1720-MHz transition. We also examine the association statistics of 1720-MHz OH SFR masers with other ground-state OH masers, excited-state OH masers, class I and class II methanol masers, and water masers, and compare maser positions with mid-infrared images of the parent SFRs. Of the 33 1720-MHz star formation masers, 10 are offset from their central exciting sources, and appear to be associated with outflow activity.

scholarly journals Theoretical description of adiabatic laser alignment and mixed-field orientation: the need for a non-adiabatic model

2011 ◽  
Vol 13 (42) ◽  
pp. 18815 ◽  
Author(s):  
J. J. Omiste ◽  
M. Gärttner ◽  
P. Schmelcher ◽  
R. González-Férez ◽  
L. Holmegaard ◽  
...  
Keyword(s):  
Theoretical Description ◽  
Field Orientation ◽  
Laser Alignment ◽  
Mixed Field

scholarly journals Mixed-field orientation of molecules without rotational symmetry

2013 ◽  
Vol 139 (23) ◽  
pp. 234313 ◽  
Author(s):  
Jonas L. Hansen ◽  
Juan J. Omiste ◽  
Jens H. Nielsen ◽  
Dominik Pentlehner ◽  
Jochen Küpper ◽  
...  
Keyword(s):  
Rotational Symmetry ◽  
Field Orientation ◽  
Mixed Field ◽  
Orientation Of Molecules

Non-adiabatic effects in near-adiabatic mixed-field orientation and alignment

2016 ◽  
Vol 479 ◽  
pp. 63-71 ◽  
Author(s):  
Anjali Maan ◽  
Dharamvir Singh Ahlawat ◽  
Vinod Prasad
Keyword(s):  
Field Orientation ◽  
Mixed Field

A Molecular Beam Microwave Fourier Transform (MB-MWFT) Spectrometer with an Electric Discharge Nozzle

1991 ◽  
Vol 46 (10) ◽  
pp. 914-916 ◽  
Author(s):  
J.-U. Grabow ◽  
N. Heineking ◽  
W. Stahl
Keyword(s):  
Fourier Transform ◽  
Excited State ◽  
Sulfur Dioxide ◽  
Ground State ◽  
Molecular Beam ◽  
Carbonyl Sulfide ◽  
Vibrational States ◽  
Nozzle Orifice ◽  
First Excited State ◽  
Electronic Ground

AbstractWe report on first experiments with our pulsed molecular beam microwave Fourier transform (MB-MWFT) spectrometer using a special nozzle which allows high voltage discharges within the nozzle orifice. Under these conditions we observed low J rotational transitions in highly excited vibrational states of carbonyl sulfide and sulfur dioxide, and also rotational lines of the SO radical in the 3Σ- electronic ground state and both the vibrational ground and first excited state.

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