Experimental and theoretical study of the Kr 
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-shell Auger decay

Boudjemia, Nacer; Jänkälä, K.; Gejo, T.; Kohmura, Yoshiki; Huttula, Marko; Piancastelli, M. N.; Simon, M.; Oura, M.; Püttner, R.

doi:10.1103/physreva.104.012804

Cited by 6 publications

(7 citation statements)

References 43 publications

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“…The results of our experimental measurements and theoretical calculations on the L Auger transitions to the final ionic states with two vacancies, 3d −1 and 4p −1 , having different terms and total angular momenta [15] (see Supplemental Material to [15]). The energies and relative intensities of the most intense transitions, which carry more than 90% of the total The spectra of Auger emission have been calculated according to the following scheme.…”

Section: Results Of Measurements and Calculationsmentioning

confidence: 98%

“…Auger transitions is given in Ref. [15]. The L 2 − M 4,5 N 2,3 Auger transition near ∼1610 eV was chosen for investigation of PCI effects because it is relatively well isolated from other transitions and its multi-line substructure is calculated (see the Supplemental Material of Ref.…”

Section: Methodsmentioning

confidence: 99%

“…(2) The electron spectrum of the L 2 −M 4,5 N 2,3 Auger transition includes several lines with different total angular momenta [15]. In Ref.…”

Section: Introductionmentioning

confidence: 99%

“…In Ref. [15], the Kr L-shell Auger electron spectra have been investigated in detail experimentally and the calculated Auger transition energies and decay rates tabulated in the Supplemental Material. The energies of these lines overlap and span a rather narrow interval ∼3 eV.…”

Section: Introductionmentioning

confidence: 99%

“…A ≃ 1610 eV [15]. The energy of the photoelectron E (0) ph at the moment of its generation is determined by the excess of photon energy above the 1s −1 threshold, E (0) ph = ∆E.…”

Section: Introductionmentioning

confidence: 99%

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Manifestation of postcollision interaction in Krypton LMN Auger spectra following K -shell photoionization

et al. 2022

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We report on an experimental and theoretical study of post-collision interaction (PCI) effects on L 2 − M 4,5 N 2,3 Auger electrons measured above the Kr K -edge in which L 2 vacancies are primarily generated by KL 2 x-ray emission. Such cascade processes, in which a deep inner-shell vacancy decays first by x-ray emission followed by Auger electron emission, is a strong decay mode in heavy atoms. The L 2 −M 4,5 N 2,3 Auger electron peak is observed to become increasingly asymmetric with a shifting peak maximum as the absorbed x-ray energy approaches the K -shell ionization threshold. This is attributed to PCI energy exchanges of the Auger electron with the 1s photoelectron.To model the PCI effects, we have applied a semiclassical approach modified to account for the combined lifetimes of the K and L 2 hole states. In addition, our analysis treats several closely spaced Auger transitions with final ionic states having different terms and angular momenta.

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Section: Results Of Measurements and Calculationsmentioning

confidence: 98%

Section: Methodsmentioning

confidence: 99%

“…(2) The electron spectrum of the L 2 −M 4,5 N 2,3 Auger transition includes several lines with different total angular momenta [15]. In Ref.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…A ≃ 1610 eV [15]. The energy of the photoelectron E (0) ph at the moment of its generation is determined by the excess of photon energy above the 1s −1 threshold, E (0) ph = ∆E.…”

Section: Introductionmentioning

confidence: 99%

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Manifestation of postcollision interaction in Krypton LMN Auger spectra following K -shell photoionization

et al. 2022

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Emission of x rays in collisions of xenon ions with metal surfaces

Guo

et al. 2022

Chemical Physics

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Resonant X-ray photo-oxidation of light-harvesting iron (II/III) N-heterocyclic carbene complexes

Temperton

Guo

D’Acunto

et al. 2021

Sci Rep

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Two photoactive iron N-heterocyclic carbene complexes $${[\hbox {Fe}^{{{\rm{II}}}}(\hbox {btz})_2(\hbox {bpy})]^{2+}}$$ [ Fe II ( btz ) 2 ( bpy ) ] 2 + and $${[\hbox {Fe}^{{\rm{III}}}(\hbox {btz})_3]^{3+}}$$ [ Fe III ( btz ) 3 ] 3 + , where btz is 3,3’-dimethyl-1,1’-bis(p-tolyl)-4,4’-bis(1,2,3-triazol-5-ylidene) and bpy is 2,2’-bipyridine, have been investigated by Resonant Photoelectron Spectroscopy (RPES). Tuning the incident X-ray photon energy to match core-valence excitations provides a site specific probe of the electronic structure properties and ligand-field interactions, as well as information about the resonantly photo-oxidised final states. Comparing measurements of the Fe centre and the surrounding ligands demonstrate strong mixing of the Fe $${\hbox {t}_{{\rm{2g}}}}$$ t 2 g levels with occupied ligand $$\pi$$ π orbitals but weak mixing with the corresponding unoccupied ligand orbitals. This highlights the importance of $$\pi$$ π -accepting and -donating considerations in ligand design strategies for photofunctional iron carbene complexes. Spin-propensity is also observed as a final-state effect in the RPES measurements of the open-shell $$\hbox {Fe}^{{\rm{III}}}$$ Fe III complex. Vibronic coupling is evident in both complexes, where the energy dispersion hints at a vibrationally hot final state. The results demonstrate the significant impact of the iron oxidation state on the frontier electronic structure and highlights the differences between the emerging class of $$\hbox {Fe}^{{\rm{III}}}$$ Fe III photosensitizers from those of more traditional $$\hbox {Fe}^{{\rm{II}}}$$ Fe II complexes.

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Experimental and theoretical study of the Kr L -shell Auger decay

Cited by 6 publications

References 43 publications

Manifestation of postcollision interaction in Krypton LMN Auger spectra following K -shell photoionization

Manifestation of postcollision interaction in Krypton LMN Auger spectra following K -shell photoionization

Emission of x rays in collisions of xenon ions with metal surfaces

Resonant X-ray photo-oxidation of light-harvesting iron (II/III) N-heterocyclic carbene complexes

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