000619113 001__ 619113 000619113 005__ 20250715171120.0 000619113 0247_ $$2doi$$a10.1088/1361-6455/ad4078 000619113 0247_ $$2ISSN$$a0022-3700 000619113 0247_ $$2ISSN$$a0953-4075 000619113 0247_ $$2ISSN$$a1361-6455 000619113 0247_ $$2datacite_doi$$a10.3204/PUBDB-2024-07400 000619113 0247_ $$2altmetric$$aaltmetric:171601052 000619113 0247_ $$2WOS$$aWOS:001370822800001 000619113 0247_ $$2openalex$$aopenalex:W4394907520 000619113 037__ $$aPUBDB-2024-07400 000619113 041__ $$aEnglish 000619113 082__ $$a530 000619113 1001_ $$0P:(DE-H253)PIP1110344$$aDurkan, Stephen$$b0$$eCorresponding author 000619113 245__ $$aMultiphoton single and double ionization of neon in the EUV 000619113 260__ $$aBristol$$bIOP Publ.$$c2024 000619113 3367_ $$2DRIVER$$aarticle 000619113 3367_ $$2DataCite$$aOutput Types/Journal article 000619113 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1734099259_1158399 000619113 3367_ $$2BibTeX$$aARTICLE 000619113 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000619113 3367_ $$00$$2EndNote$$aJournal Article 000619113 520__ $$aNew information demonstrating the importance of both sequential and simultaneous (or direct) multiphoton ionization of inner shell electrons from neon is discussed in this paper. Ne was irradiated with intense 93 eV free electron laser (FEL) pulses at FLASH and studied with the aid of photoelectron spectrometry. This resulted in two and three photon, single and double ionization of neon, removing electrons from 2s and 2p subshells of the neutral Ne atom in multiple different pathways. The spectral features of the photoelectrons were identified through comparison with the NIST database and field averaged time-dependent density matrix theory. The calculations show the direct multiphoton ionization processes to be extremely sensitive to the focused FEL intensity. 000619113 536__ $$0G:(DE-HGF)POF4-631$$a631 - Matter – Dynamics, Mechanisms and Control (POF4-631)$$cPOF4-631$$fPOF IV$$x0 000619113 536__ $$0G:(DE-HGF)POF4-6G2$$a6G2 - FLASH (DESY) (POF4-6G2)$$cPOF4-6G2$$fPOF IV$$x1 000619113 536__ $$0G:(GEPRIS)170620586$$aDFG project G:(GEPRIS)170620586 - SFB 925: Licht-induzierte Dynamik und Kontrolle korrelierter Quantensysteme (170620586)$$c170620586$$x2 000619113 542__ $$2Crossref$$i2024-12-05$$uhttps://creativecommons.org/licenses/by/4.0/ 000619113 542__ $$2Crossref$$i2024-12-05$$uhttps://iopscience.iop.org/info/page/text-and-data-mining 000619113 588__ $$aDataset connected to CrossRef, Journals: bib-pubdb1.desy.de 000619113 693__ $$0EXP:(DE-H253)F-BL3-20150101$$1EXP:(DE-H253)FLASH-20150101$$6EXP:(DE-H253)F-BL3-20150101$$aFLASH$$fFLASH Beamline BL3$$x0 000619113 7001_ $$0P:(DE-H253)PIP1007734$$aRichardson, Vincent$$b1$$eCorresponding author 000619113 7001_ $$0P:(DE-HGF)0$$aForembski, Andrew$$b2 000619113 7001_ $$0P:(DE-H253)PIP1080439$$aVarvarezos, Lazaros$$b3 000619113 7001_ $$0P:(DE-H253)PIP1007666$$aCubaynes, Denis$$b4 000619113 7001_ $$0P:(DE-H253)PIP1002687$$aDüsterer, Stefan$$b5 000619113 7001_ $$0P:(DE-H253)PIP1006751$$aJuranić, Pavle$$b6 000619113 7001_ $$0P:(DE-H253)PIP1005345$$aLi, Wenbin$$b7 000619113 7001_ $$0P:(DE-H253)PIP1010929$$aRichter, Mathias$$b8 000619113 7001_ $$0P:(DE-H253)PIP1001376$$aTiedtke, Kai$$b9 000619113 7001_ $$0P:(DE-H253)PIP1007732$$aMeyer, Michael$$b10 000619113 7001_ $$0P:(DE-H253)PIP1018060$$aNikolopoulos, Lampros$$b11 000619113 7001_ $$0P:(DE-H253)PIP1007497$$aCostello, John$$b12 000619113 770__ $$aSpecial Issue on Experimental and Theoretical Extreme Ultraviolet to X-ray Non-Linear Methods 000619113 77318 $$2Crossref$$3journal-article$$a10.1088/1361-6455/ad4078$$bIOP Publishing$$d2024-12-05$$n1$$p015601$$tJournal of Physics B: Atomic, Molecular and 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