scholarly journals Probing different spin states in xylyl radicals and ions

2018 ◽  
Vol 20 (10) ◽  
pp. 7180-7189 ◽  
Author(s):  
Mathias Steglich ◽  
Andras Bodi ◽  
John P. Maier ◽  
Patrick Hemberger
Keyword(s):  
Photoelectron Spectroscopy ◽  
Triplet States ◽  
Spin States ◽  
Two Photon ◽  
Benzyl Radicals ◽  
Singlet And Triplet States ◽  
Photon Ionization

Resonant one-color two-photon ionization spectroscopy and mass-selected threshold photoelectron spectroscopy were applied to study the electronic doublet states of the three xylyl (methyl-benzyl) radicals above 3.9 eV as well as the singlet and triplet states of the cations up to 10.5 eV.

scholarly journals A comparison of photoelectron spectroscopy and two‐photon ionization spectroscopy: Excited states of Au2, Au3, and Au4

1994 ◽  
Vol 100 (10) ◽  
pp. 7093-7100 ◽  
Author(s):  
H. Handschuh ◽  
G. Ganteför ◽  
P. S. Bechthold ◽  
W. Eberhardt
Keyword(s):  
Excited States ◽  
Photoelectron Spectroscopy ◽  
Two Photon ◽  
Photon Ionization

Nonresonant EUV-UV two-color two-photon ionization of He studied by single-shot photoelectron spectroscopy

2013 ◽  
Vol 88 (6) ◽  
Author(s):  
M. Fushitani ◽  
Y. Hikosaka ◽  
A. Matsuda ◽  
T. Endo ◽  
E. Shigemasa ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Single Shot ◽  
Two Photon ◽  
Photon Ionization

SPIN CORRELATIONS OF THE FINAL LEPTONS IN THE TWO-PHOTON PROCESSES γγ → e+e-, μ+μ-, τ+τ-

2014 ◽  
Vol 35 ◽  
pp. 1460453
Author(s):  
VALERY V. LYUBOSHITZ ◽  
VLADIMIR L. LYUBOSHITZ
Keyword(s):  
Spin Structure ◽  
Triplet States ◽  
Strongly Correlated ◽  
Correlation Tensor ◽  
Spin Correlations ◽  
Two Photon ◽  
Final Electron ◽  
Singlet And Triplet States ◽  
Explicit Expressions

The spin structure of the process γγ → e+e- is theoretically investigated. It is shown that, if the primary photons are unpolarized, the final electron and positron are unpolarized as well but their spins are strongly correlated. For the final (e+e-) system, explicit expressions for the components of the correlation tensor are derived, and the relative fractions of singlet and triplet states are found. It is demonstrated that in the process γγ → e+e- one of the Bell-type incoherence inequalities for the correlation tensor components is always violated and, thus, spin correlations of the electron and positron in this process have the strongly pronounced quantum character. Analogous consideration can be wholly applied as well to the two-photon processes γγ → μ+μ- and γγ → τ+τ-, which become possible at considerably higher energies.

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