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X-ray photodesorption yields of N 2 15 and CO 13 are derived as a function of the incident photon energy near the N (∼400 eV) and O K-edge (∼500 eV) for pure N 2 15 ice and mixed CO 13 : N 2 15 ices. The photodesorption spectra from the mixed ices reveal an indirect desorption mechanism for which the desorption of N 2 15 and CO 13 is triggered by the photoabsorption of CO 13 and N 2 15 , respectively. This mechanism is confirmed by the x-ray photodesorption of CO 13 from a layered CO 13 / N 2 15 ice irradiated at 401 eV on the N 1s → π* transition of N 2 15 . This latter experiment enables us to quantify the relevant depth involved in the indirect desorption process, which is found to be 30–40 monolayers in that case. This value is further related to the energy transport of Auger electrons emitted from the photoabsorbing N 2 15 molecules that scatter toward the ice surface, inducing the desorption of CO 13 . The photodesorption yields corrected from the energy that can participate in the desorption process (expressed in molecules desorbed by eV deposited) do not depend on the photon energy; hence, they depend neither on the photoabsorbing molecule nor on its state after Auger decay. This demonstrates that x-ray induced electron stimulated desorption, mediated by Auger scattering, is the dominant process explaining the desorption of N 2 15 and CO 13 from the ices studied in this work. [ABSTRACT FROM AUTHOR]

Water molecules trapped in rare gas matrices exhibit conspicuous shifts in their far-infrared (FIR), rotranslational spectral features compared with the corresponding transitions observed in the gas phase. These confinement-induced perturbations have been related not only to the quantization of translational motion but also to the coupling between the orientational and positional degrees of freedom: the rotation–translation coupling (RTC). As the propensity displayed by the nuclear spin isomers (NSI) of water to undergo interconversion in confinement is intimately related to how its nuclear spin degrees of freedom are coupled with those for intra- and intermolecular motions, confinement-induced RTC should also strongly impact the NSI interconversion mechanisms and rates. Insight into the rotranslational dynamics for H 2 16 O , H 2 17 O , and H 2 18 O , confined in argon and krypton matrices, is provided here based on the evolution of rotranslational spectra induced by NSI interconversion while a definitive assignment is provided from the transition energies and intensities calculated using the confined rotor model [Paper I, Wespiser et al., J. Chem. Phys. 156, 074304 (2021)]. In order to build a complete rotranslational energy diagram of confined water, which is fundamental to understand the NSI interconversion rates, the energy difference between the ground ortho and para rotranslational states is derived from the temperature dependence of the intensity ratio of mid-infrared lines emerging from these states. These investigations should provide deeper insight of the factors that control NSI interconversion of water isotopologues under extreme confinement. [ABSTRACT FROM AUTHOR]

This essay uses ethnographic research conducted among Haitian Protestants in the Bahamas in 2005 and 2012 plus internet resources to document the belief among Haitian Protestants (Haitians who practice Protestant forms of Christianity) that Haiti supposedly made a pact with the Devil (Satan) as the result of Bwa Kayiman, a Vodou ceremony that launched the Haitian Revolution (1791−1803). Vodou is the syncretized religion indigenous to Haiti. I argue that this interpretation of Bwa Kayiman is an extension of the negative effects of the globalization of American Fundamentalist Christianity in Haiti and, by extension, peoples of African descent and the Global South.