Abstract
At AMCO 3 I reported on a series of 15 nuclear reaction Q-values1 giving values for 9 masses below mass 16. These charged particle measurements were made with the Notre Dame 50 cm broadrange spectrograph and 4 MeV accelerator. The problem of differential hysteresis in the spectrograph magnetic field was recognized and a random error assigned to each measurement to cover the consequent uncertainty. We now have a much larger spectrograph designed especially for energy measurements of high absolute accuracy and an FN tandem accelerator. Today I shall review the features of this new spectrograph, describe an advance which allows us to make much of the differential hysteresis effect systematic and hence correct for it, give comparisons of results showing improved accuracy of energy measurements, and report on a series of 36 Q-values and an adjustment of masses from Cr to Zn.
Supported by NSF grant GP 27456
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Jolivette, P.L., Goss, J.D., Marolt, G.L., Rollefson, A.A., Browne, C.P. (1976). Accurate Q-value Measurements and Masses in the Iron region. In: Sanders, J.H., Wapstra, A.H. (eds) Atomic Masses and Fundamental Constants 5. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-2682-3_18
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DOI: https://doi.org/10.1007/978-1-4684-2682-3_18
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