²¹²Pb (ThB) as a Time Calibration Standard for Delayed Coincidence Measurements

Abstract

212Pb (Th B ) as a time calibration standardfor delayed coincidence measurements.

New, Striated, High Efficiency Photographic Plates for Recording Conversion and/or Auger Electron Spectra

“…The emulsion had by a lucky chance obtained a striated surface, the striations running almost parallel with the length of the plate, as can be seen in Fig. 8 on page 340 in the work quoted (ref. 111).…”

“…In the same work [8] Valivaara and Marelius give the 115.1 keV gamma-radiation in zlzBi its new place in the level scheme, viz. as the first excited level over the ground-state, instead of, as earlier authors, between the 299 and the 414 keV levels.…”

“…If we add the 7 gamma-ray energies found and given in Table I for zlaBi, we get 115.963 keV, which agrees reasonably with the 115.1 keV level in zlzBi (ref. [8]).…”