| Popis: |
$Q$ values were measured for 27 reactions on targets of $^{12}\mathrm{C}$, $^{54}\mathrm{Cr}$, $^{54,56}\mathrm{Fe}$, $^{59}\mathrm{Co}$, and $^{58,\phantom{\rule{0ex}{0ex}}60,\phantom{\rule{0ex}{0ex}}62,\phantom{\rule{0ex}{0ex}}64}\mathrm{Ni}$ with resulting uncertainties of 0.7 to 3.2 keV. Care was taken to define sources of error. A ${\ensuremath{\chi}}^{2}$ test on an interconnected set of 19 measurements indicates internal consistency and a comparison of eight ($d,p$) $Q$ values with ($n,\ensuremath{\gamma}$) numbers shows excellent agreement. A mass evaluation was performed on a truncated region centered on Co. The results indicate that the 1971 values for the masses of $^{55}\mathrm{Cr}$ and $^{55}\mathrm{Co}$ are in error. The uncertainties of the masses of $^{53}\mathrm{Fe}$ and $^{61}\mathrm{Co}$ are greatly reduced. The question of the $^{57}\mathrm{Fe}$ mass raised in The 1971 Atomic Mass Evaluation is not entirely resolved and consequently the absolute values of some masses in this region are still uncertain to about 5 keV although the $Q$ values are improved. |
