Search results for "Fragmentation mechanism"

showing 2 items of 2 documents

Electron Ionization Induced Fragmentation of some 3-Aroylamino-5-Methyl-1,2,4- Oxadiazoles and 3-Acetylamino-5-Aryl-1,2,4-Oxadiazoles

2017

: Background and objectives. 1,2,4-Oxadiazoles show a high reactivity and represent starting compounds for the synthesis of several other heterocycles. Some their derivatives can give the so called Boulton-Katritzky Reactions (BKR) which opens the way to the synthesis of several azoles. For this reason we have registered the mass spectra of several 3-aroylamino-5-methyl-1,2,4-oxadiazoles and 3-acetylamino-5-aryl-1,2,4-oxadiazoles. Methods and results. Thus, studying the mass spectra of the isomeric couple 3-benzoylamino-5-methyl-1,2,4-oxadiazole (1A) and 3-acetylamino-5-phenyl-1,2,4-oxadiazoles (1B) we have observed that MIKE and CID MIKE spectra of their molecular ions and of the [M – CH2C…

Mass spectrometryStereochemistryArylOrganic ChemistryMass spectrometryPhotochemistrychemistry.chemical_compoundEI induced rearrangementchemistryFragmentation (mass spectrometry)Boulton-Katritzky Reactions (BKR)Fragmentation mechanism3-Acylamino-124-oxadiazolesElectron ionization
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Invariant mass spectrum and α-n correlation function studied in the fragmentation of 6He on a carbon target

1998

13 pags, 5 figures.-- PACS nrs.: 24.60.−t; 25.70.Ef; 27.20.+n.

PhysicsNuclear and High Energy PhysicsReaction mechanismMomentum distributionsBreakupSpectral lineIon[PACS] Reactions induced by unstable nucleiBreakup reactions6 ≤ A ≤ 19 [[PACS] Properties of specific nuclei listed by mass ranges]Fragmentation (mass spectrometry)Halo nucleiFragmentation mechanism[PACS] ResonancesSecondary radioactive beamsInvariant massNeutronHe-5He-6Invariant mass spectra[PACS] Properties of specific nuclei listed by mass ranges: 6 ≤ A ≤ 19Atomic physicsGround stateExotic nucleiNuclear Physics A
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