An study of the photodissociation of CHI and CHI.

Photodissociation of the CHI radical and the CHI cation is studied by means of high-level calculations, including spin-orbit effects. Potential-energy curves (PEC) along the dissociating bond distances involved in some fragmentation pathways of these species are computed for the ground and several excited electronic states. Based on the PECs obtained, the possible photodissociation mechanisms are analyzed and suggested.

An study of the photodissociation of the vinyl radical.

Photodissociation of the vinyl radical through pathways CHCH → CHC + H, CHCH → CHCH + H, and CHCH → CH + CH is investigated by means of high-level calculations. Potential-energy curves (PECs) along the corresponding dissociating bond distance associated with the ground and several excited electronic states involved in the above fragmentation pathways, as well as the nonadiabatic couplings connecting the different states, are obtained. The findings of several experiments on vinyl photodissociation performed at different excitation wavelengths are analyzed and explained qualitatively in the light of the present PECs.

Simultaneous occurrence of a Takotsubo syndrome and paranoia delirium, related to Covid-19 pandemic: A case report.

Some psychosomatic diseases, like Tako-tsubo cardiomyopathy, may occur because of exposure to a stressful event like COVID-19. The simultaneous development of psychosis and Tako-tsubo cardiomyopathy suggests a field of vulnerability. Specific measures need to be taken to help vulnerable people to manage these stressful events.

Threshold Photoelectron Spectroscopy of the CHI, CHI, and CI Radicals.

VUV photoionization of the CHI radicals (with = 0, 1, and 2) is investigated by means of synchrotron radiation coupled with a double imaging photoion-photoelectron coincidence spectrometer. Photoionization efficiencies and threshold photoelectron spectra (TPES) for photon energies ranging between 9.2 and 12.