Search results for "Autoionizing"

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Laser resonance ionization scheme development for tellurium and germanium at the dual Ti:Sa–Dye ISOLDE RILIS

2016

Abstract The resonance ionization laser ion source (RILIS) is the principal ion source of the ISOLDE radioactive beam facility based at CERN. Using the method of in-source laser resonance ionization spectroscopy, a transition to a new autoionizing state of tellurium was discovered and applied as part of a three-step, three-resonance, photo-ionization scheme. In a second study, a three-step, two-resonance, photo-ionization scheme for germanium was developed and the ionization efficiency was measured at ISOLDE. This work increases the range of ISOLDE RILIS ionized beams to 31 elements. Details of the spectroscopy studies are described and the new ionization schemes are summarized.

Nuclear and High Energy Physicschemistry.chemical_elementGermanium7. Clean energy01 natural sciencesISOLDElaw.inventionlawIonization0103 physical sciencesPhysics::Atomic and Molecular ClustersPhysics::Atomic PhysicsDetectors and Experimental TechniquesNuclear Experiment010306 general physicsSpectroscopyInstrumentationPhysicsRange (particle radiation)RILISGermanium010308 nuclear & particles physicsAutoionizingLaserIon sourcechemistryPhysics::Accelerator PhysicsLaser resonanceLaser ionizationTelluriumAtomic physicsTelluriumNuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
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Observation of laser-induced continuum structure in the NO molecule

1999

0953-4075; We present experimental results on the modification of a molecular ionization continuum through a laser-induced continuum structure. The effect is demonstrated in nitric oxide where the resonant 2 + 1 multiphoton-ionization process of the X (2)Pi(3/2) electronic ground state is modified by dressing the continuum with the electromagnetically embedded M(2)Sigma(+) Rydberg state. Through selection of a two-photon rovibronic transition via the D electronic state, a single rotational ground state level is excited to the continuum with one laser field. By adding an extra dressing field, a coupling is then established between this three-photon excited ground state level and one of the M…

PhysicsSPECTRUMField (physics)Continuum (design consultancy)RESONANCECondensed Matter PhysicsLaserResonance (particle physics)Atomic and Molecular Physics and Opticslaw.inventionSODIUMATOMSMULTIPHOTON IONIZATIONlawPHOTOIONIZATIONIonizationExcited stateAUTOIONIZING STATESHARMONIC-GENERATIONPhysics::Atomic PhysicsFIELDAtomic physicsRydberg stateGround stateHELIUMJournal of Physics B: Atomic, Molecular and Optical Physics
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