APPENDIX A COMPOSITE TABLE OF WAVELENGTHS MEASURED This composite wavelength table covers the wavelength region from the ultraviolet cutoff of the spectra in question up to approximately 5000 A. This limit was set because at the time it was concluded that practically all the characteristic parts of the spectra of atomic explosions were found below this value. Data for all explosions prior to Operation Ivy are not included but only those which were considered to be fairly typical. The “iron” spectrum is given in detail for the Buster Baker shot. The values for iron are not given in all possible situations. They are not given above about 3500 A for TumblerSnapper 2 except in some cases where the notation “co” for coincidence (with standard iron spectrum) is used. The absence of wavelength values in Tumbler-Snapper 3 above about 4600 A indicates that only some very weak coincidences with the iron comparison spectrum are detected. (Please refer to the text for the regions which have been measured.) The presence of an identification does not always mean that it is taken to be certain that the line is due to this material. A line of another material may be superimposed at this point. This may be true of OH, which was identified only by wavelength coincidence. There are gaps in the identifications due partly to incomplete original research data, e.g., in the case of the S-R QO, bands and NO, bands. “Em” stands for emission, and “Br” or “Brd” either before or after the number stands for broad. “Dv” and “dr” mean degraded to the violet and red, respectively. The numbers after the wavelength values are very rough relative estimates of the visual intensity. If no numbers are given, this indicates a rather weak intensity. “ Brackets include a region of broad spectral absorption, or emission if specifically marked m,” and the intensity numbers generally refer to the region as a whole and should not be "ead separately, _ All peaks have not been measured. Some wavelength values of weak lines hence are not Biven, e.g., in King (Baird) where measurements were not easy. The microphotometertraces of a forthcoming atlas will then be particularly useful. Some irregularities have crept into the typing. 37 BF