Extreme ultraviolet ionization of pure He nanodroplets: mass-correlated photoelectron imaging, Penning ionization, and electron energy-loss spectra
The ionization dynamics of pure He nanodroplets irradiated by Extreme ultraviolet radiation is studied using Velocity-Map Imaging PhotoElectron-PhotoIon COincidence spectroscopy. We present photoelectron energy spectra and angular distributions measured in coincidence with the most abundant ions He(...
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| Veröffentlicht in: | The Journal of chemical physics 2013-08, Vol.139 (8), p.084301-084301 |
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| container_end_page | 084301 |
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| container_title | The Journal of chemical physics |
| container_volume | 139 |
| creator | Buchta, D Krishnan, S R Brauer, N B Drabbels, M O'Keeffe, P Devetta, M Di Fraia, M Callegari, C Richter, R Coreno, M Prince, K C Stienkemeier, F Ullrich, J Moshammer, R Mudrich, M |
| description | The ionization dynamics of pure He nanodroplets irradiated by Extreme ultraviolet radiation is studied using Velocity-Map Imaging PhotoElectron-PhotoIon COincidence spectroscopy. We present photoelectron energy spectra and angular distributions measured in coincidence with the most abundant ions He(+), He2(+), and He3(+). Surprisingly, below the autoionization threshold of He droplets, we find indications for multiple excitation and subsequent ionization of the droplets by a Penning-like process. At high photon energies we observe inelastic collisions of photoelectrons with the surrounding He atoms in the droplets. |
| doi_str_mv | 10.1063/1.4818531 |
| format | Article |
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We present photoelectron energy spectra and angular distributions measured in coincidence with the most abundant ions He(+), He2(+), and He3(+). Surprisingly, below the autoionization threshold of He droplets, we find indications for multiple excitation and subsequent ionization of the droplets by a Penning-like process. 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We present photoelectron energy spectra and angular distributions measured in coincidence with the most abundant ions He(+), He2(+), and He3(+). Surprisingly, below the autoionization threshold of He droplets, we find indications for multiple excitation and subsequent ionization of the droplets by a Penning-like process. At high photon energies we observe inelastic collisions of photoelectrons with the surrounding He atoms in the droplets.</description><subject>ANGULAR DISTRIBUTION</subject><subject>ATOMIC AND MOLECULAR PHYSICS</subject><subject>AUTOIONIZATION</subject><subject>DROPLETS</subject><subject>ENERGY SPECTRA</subject><subject>ENERGY-LOSS SPECTROSCOPY</subject><subject>EXTREME ULTRAVIOLET RADIATION</subject><subject>HELIUM IONS</subject><subject>Imaging</subject><subject>Ionization</subject><subject>IRRADIATION</subject><subject>Nanocomposites</subject><subject>Nanomaterials</subject><subject>Nanostructure</subject><subject>PHOTOELECTRON SPECTROSCOPY</subject><subject>Photoelectrons</subject><subject>PHOTOIONIZATION</subject><subject>PHOTON-ATOM COLLISIONS</subject><issn>0021-9606</issn><issn>1089-7690</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNqNkcFq3DAQhkVJaTZpD32BIMglgTjVWLIs91ZC0hQC7aE9C1ma3bjYkiPJpclr9IWjZbehxw6IGcQ3_4z0E_Ie2CUwyT_ApVCgGg6vyAqY6qpWduyArBiroeokk4fkKKWfjDFoa_GGHNaCMdl1sCJ_rn_niBPSZczR_BrCiJkOwQ9PJpdEw5rOS0R6i9QbH1wMcyHSRzqZlCobYsTRZHR0vg854Ig2x9I2TGYz-M0F_Ybel-IfyQtqvKMvJHqMm8dqDCnRNG8vzVvyem3GhO_2-Zj8uLn-fnVb3X39_OXq011lG2hz5dpeGSelReSqLYdzIQHrzjglagG97QEbpxrsa6mc7QCksFZY4RruWMuPyelON6Q86GSHjPbeBu_LFrouIaBRhTrbUXMMDwumrKchWRxH4zEsSYOQohF1J8R_oJwp0QrYzj7foTaWl0dc6zmWT4uPGpjemqpB700t7MledukndC_kXxf5M6QinlI</recordid><startdate>20130828</startdate><enddate>20130828</enddate><creator>Buchta, D</creator><creator>Krishnan, S R</creator><creator>Brauer, N B</creator><creator>Drabbels, M</creator><creator>O'Keeffe, P</creator><creator>Devetta, M</creator><creator>Di Fraia, M</creator><creator>Callegari, C</creator><creator>Richter, R</creator><creator>Coreno, M</creator><creator>Prince, K C</creator><creator>Stienkemeier, F</creator><creator>Ullrich, J</creator><creator>Moshammer, R</creator><creator>Mudrich, M</creator><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7U5</scope><scope>8FD</scope><scope>H8D</scope><scope>L7M</scope><scope>OTOTI</scope></search><sort><creationdate>20130828</creationdate><title>Extreme ultraviolet ionization of pure He nanodroplets: mass-correlated photoelectron imaging, Penning ionization, and electron energy-loss spectra</title><author>Buchta, D ; 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We present photoelectron energy spectra and angular distributions measured in coincidence with the most abundant ions He(+), He2(+), and He3(+). Surprisingly, below the autoionization threshold of He droplets, we find indications for multiple excitation and subsequent ionization of the droplets by a Penning-like process. At high photon energies we observe inelastic collisions of photoelectrons with the surrounding He atoms in the droplets.</abstract><cop>United States</cop><pmid>24006991</pmid><doi>10.1063/1.4818531</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record> |
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| source | AIP Journals Complete; AIP Digital Archive; Alma/SFX Local Collection |
| subjects | ANGULAR DISTRIBUTION ATOMIC AND MOLECULAR PHYSICS AUTOIONIZATION DROPLETS ENERGY SPECTRA ENERGY-LOSS SPECTROSCOPY EXTREME ULTRAVIOLET RADIATION HELIUM IONS Imaging Ionization IRRADIATION Nanocomposites Nanomaterials Nanostructure PHOTOELECTRON SPECTROSCOPY Photoelectrons PHOTOIONIZATION PHOTON-ATOM COLLISIONS |
| title | Extreme ultraviolet ionization of pure He nanodroplets: mass-correlated photoelectron imaging, Penning ionization, and electron energy-loss spectra |
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