Nuclear excitation energy in muon capture: A reply

1975 ◽  
Vol 12 (2) ◽  
pp. 691-694 ◽  
Author(s):  
P. Christillin ◽  
A. Dellafiore ◽  
M. Rosa-Clot
Keyword(s):  
Excitation Energy ◽  
Muon Capture ◽  
Nuclear Excitation

Nuclear Excitation Energy in Muon Capture

1973 ◽  
Vol 31 (16) ◽  
pp. 1012-1015 ◽  
Author(s):  
P. Christillin ◽  
A. Dellafiore ◽  
M. Rosa-Clot
Keyword(s):  
Excitation Energy ◽  
Muon Capture ◽  
Nuclear Excitation

scholarly journals Storage of Nuclear Excitation Energy through Magnetic Switching

1996 ◽  
Vol 77 (15) ◽  
pp. 3232-3235 ◽  
Author(s):  
Yu. V. Shvyd'ko ◽  
T. Hertrich ◽  
U. van Bürck ◽  
E. Gerdau ◽  
O. Leupold ◽  
...  
Keyword(s):  
Excitation Energy ◽  
Nuclear Excitation ◽  
Magnetic Switching

Liquid-drop description of the nuclear excitation energy

1973 ◽  
Vol 202 (2) ◽  
pp. 265-273 ◽  
Author(s):  
W. Stocker ◽  
J. Burzlaff
Keyword(s):  
Excitation Energy ◽  
Liquid Drop ◽  
Nuclear Excitation

Multipole excitations in nuclear muon capture and mean nuclear excitation energies

1975 ◽  
Vol 12 (1) ◽  
pp. 28-35 ◽  
Author(s):  
D. Duplain ◽  
B. Goulard ◽  
J. Joseph
Keyword(s):  
Muon Capture ◽  
Nuclear Excitation ◽  
Excitation Energies

Mean excitation energy and neutron emission following muon capture in medium-heavy nuclei

1976 ◽  
Vol 34 (2) ◽  
pp. 289-295 ◽  
Author(s):  
P. Christillin ◽  
A. Dellafiore ◽  
M. Rosa-Clot
Keyword(s):  
Excitation Energy ◽  
Neutron Emission ◽  
Muon Capture ◽  
Heavy Nuclei ◽  
Mean Excitation Energy

Nuclear muon-capture sum rules and mean nuclear excitation energies

1974 ◽  
Vol 10 (5) ◽  
pp. 2034-2044 ◽  
Author(s):  
B. Goulard ◽  
H. Primakoff
Keyword(s):  
Sum Rules ◽  
Muon Capture ◽  
Nuclear Excitation ◽  
Excitation Energies

Thymine Dimerization Induced by Oxidative DNA Lesions and Epigenetic Intermediates via Triplet-Triplet Energy Transfer

2020 ◽  
Author(s):  
Mauricio Lineros-Rosa ◽  
Antonio Francés-Monerris ◽  
Antonio Monari ◽  
Miguel Angél Miranda ◽  
Virginie Lhiaubet-Vallet
Keyword(s):  
Energy Transfer ◽  
Excitation Energy ◽  
Transient Absorption ◽  
Theoretical Calculations ◽  
Dna Lesions ◽  
Transient Absorption Spectroscopy ◽  
Triplet Energy ◽  
Pyrimidine Dimers ◽  
Triplet Energy Transfer ◽  
Dna Nucleobases

Interaction of nucleic acids with light is a scientific question of paramount relevance not only in the understanding of life functioning and evolution, but also in the insurgence of diseases such as malignant skin cancer and in the development of biomarkers and novel light-assisted therapeutic tools. This work shows that the UVA portion of sunlight, not absorbed by canonical DNA nucleobases, can be absorbed by 5-formyluracil (ForU) and 5-formylcytosine (ForC), two ubiquitous oxidative lesions and epigenetic intermediates present in living beings in natural conditions. We measure the strong propensity of these molecules to populate triplet excited states able to transfer the excitation energy to thymine-thymine dyads, inducing the formation of the highly toxic and mutagenic cyclobutane pyrimidine dimers (CPDs). By using steady-state and transient absorption spectroscopy, NMR, HPLC, and theoretical calculations, we quantify the differences in the triplet-triplet energy transfer mediated by ForU and ForC, revealing that the former is much more efficient in delivering the excitation energy and producing the CPD photoproduct. Although significantly slower than ForU, ForC is also able to harm DNA nucleobases and therefore this process has to be taken into account as a viable photosensitization mechanism. The present findings evidence a rich photochemistry crucial to understand DNA photodamage and of potential use in the development of biomarkers and non-conventional photodynamic therapy agents.

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