. Basic mechanisms in radiobiology II. physical and chemical aspects. proceedings of an informal conference held at Highland Park, Illinois, May 7-9, 1953. Radiobiology; Radiation Effects. 121 COLLIS OEACTI TO 6R0UN. DECOMPOSITION Fig. 4. Schematic Potential Curves for Photoreactivation Model. "pallative" irradiation occur within the life of state_A_. How rapidly must the ultraviolet irradiation follow the irradiation by high-energy irradiation in order to have this protective effect? MAZIA: As much as a day. MAGEE: That is not impossibly long. You can have some odd configuration of
. Basic mechanisms in radiobiology II. physical and chemical aspects. proceedings of an informal conference held at Highland Park, Illinois, May 7-9, 1953. Radiobiology; Radiation Effects. 121 COLLIS OEACTI TO 6R0UN. DECOMPOSITION Fig. 4. Schematic Potential Curves for Photoreactivation Model. "pallative" irradiation occur within the life of state_A_. How rapidly must the ultraviolet irradiation follow the irradiation by high-energy irradiation in order to have this protective effect? MAZIA: As much as a day. MAGEE: That is not impossibly long. You can have some odd configuration of a molecule. You remember I mentioned linear H2O. You go to such a state and not the ground state of the molecule, and there can be a large barrier for going back. KASHA: I think there are two things which tend to be confused here. I would say that there can be a geometrical isomer (which may or may not be a triplet) which radiates down in some instances, but if the geometry is extreme- ly different it may not ever radiate Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original National Research Council (U. S. ). Subcommittee on Radiobiology. Washington : National Research Council
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