Additions and Corrections - Chain-Length Effects upon the Interaction of Remote Functional Groups. The Low Energy Electron Mass Spectra of αι-Dialkoxyalkanes Examined by Ion Cyclotron Resonance.

1977 ◽  
Vol 99 (4) ◽  
pp. 1288-1288 ◽  
Author(s):  
Thomas Morton ◽  
J. Beauchamp
Keyword(s):  
Functional Groups ◽  
Chain Length ◽  
Cyclotron Resonance ◽  
Mass Spectra ◽  
Low Energy ◽  
Energy Electron ◽  
Ion Cyclotron Resonance ◽  
Electron Mass ◽  
Ion Cyclotron ◽  
Low Energy Electron

Time-resolved ion cyclotron resonance

1978 ◽  
Vol 364 (1718) ◽  
pp. 367-381 ◽  
Keyword(s):  
Cyclotron Resonance ◽  
Low Energy ◽  
Interstellar Space ◽  
Ion Cyclotron Resonance ◽  
Absolute Rate ◽  
Time Resolved ◽  
Ion Molecule Reactions ◽  
Quadrupole Trap ◽  
Ion Cyclotron ◽  
Improved Technique

Ion cyclotron resonance (i. c. r.) is a technique for the study of ion-molecule reactions in the collisional range from thermal to several electron volts. The study of these reactions at low energy has been given impetus by the discovery of their importance in the ionosphere and in interstellar space. This communication identifies some possible weaknesses inherent in current i. c. r. work and suggests an improved technique with which it is possible to determine absolute rate constants more reliably. As an illustration of the technique a measurement of the rate constant for the reaction CH 4 + + CH 4 → k CH 5 + + CH 3 is presented. This value is k = 1.21 ± 0.09 × 10 -15 m 3 s -1 . A new i. c. r. cell design is discussed with which it is hoped to provide further improvement in reliability by the production of a homogeneous radiofrequency field within a true quadrupole trap.

Mass Spectra and Ion Chemistry of Methylphosphine, Dimethylphosphine and Dimethyldeuterophosphine, Investigated by Ion Cyclotron Resonance Spectrometry

1975 ◽  
Vol 30 (3) ◽  
pp. 329-339 ◽  
Author(s):  
Karl-Peter Wanczek
Keyword(s):  
Rate Constants ◽  
Cyclotron Resonance ◽  
Mass Spectra ◽  
Ion Cyclotron Resonance ◽  
Exchange Reactions ◽  
Ion Chemistry ◽  
Ion Molecule Reactions ◽  
Ion Cyclotron ◽  
Product Ions ◽  
Ion Cyclotron Resonance Spectrometry

The mass spectra and the ion molecule reactions of methylphosphine, dimethylphosphine and dimethyldeuterophosphine have been studied by ion cyclotron resonance spectrometry. About 50 ion molecule reaction are observed for each compound. The product ions can be classified as ions with two phosphorus atoms: P2R5+, P2R3+, P2R2+ and P2R+ (R = CH3 or H), as phosphonium and phosphinium ions and ions resulting from collision dissociations and charge exchange reactions. Tertiary ions with three phosphorus atoms like CH3P3H2+ (from CH3PH2) and (CH3)4P3H2 (from (CH3)2PH) have also been detected. The mechanisms of the ion molecule reactions, rearrangements, P -H- and C-H-reactivities and product ion structures are discussed, using in the case of dimethylphosphine the results obtained with the deuterated compound. Rate constants of formation of the more abundant product ions from the molecular ion and the CH3P+ ion, both odd electron particles, have been determined. The reactions with dimethylphosphine have much smaller rate constants than the reactions with methylphosphine.

Producing absorption mode Fourier transform ion cyclotron resonance mass spectra with non-quadratic phase correction functions

2015 ◽  
Vol 29 (11) ◽  
pp. 1087-1093 ◽  
Author(s):  
David P. A. Kilgour ◽  
Konstantin O. Nagornov ◽  
Anton N. Kozhinov ◽  
Konstantin O. Zhurov ◽  
Yury O. Tsybin
Keyword(s):  
Fourier Transform ◽  
Cyclotron Resonance ◽  
Mass Spectra ◽  
Phase Correction ◽  
Ion Cyclotron Resonance ◽  
Quadratic Phase ◽  
Ion Cyclotron ◽  
Absorption Mode

Automated Broadband Phase Correction of Fourier Transform Ion Cyclotron Resonance Mass Spectra

2010 ◽  
Vol 82 (21) ◽  
pp. 8807-8812 ◽  
Author(s):  
Feng Xian ◽  
Christopher L. Hendrickson ◽  
Greg T. Blakney ◽  
Steven C. Beu ◽  
Alan G. Marshall
Keyword(s):  
Fourier Transform ◽  
Cyclotron Resonance ◽  
Mass Spectra ◽  
Phase Correction ◽  
Ion Cyclotron Resonance ◽  
Ion Cyclotron
Sign in / Sign up

Export Citation Format

Share Document