Correction of dead time affects for cyclic neutron activation analysis

In this work, corrections of dead-time affects have been determined by experimental method for cyclic neutron activation analysis (CNAA) method at Dalat research reactor. The correction factors were applied for determination of short-lived nuclides such as ^46mSc (18.75 sec.), ¹⁷⁹mHf (18.67 sec.), ¹⁶⁵mDy (75.42 sec.), ⁵²V (3.74 min.), ⁵¹Ti (5.76 min.). After correction of dead-time, the analytical results were significantly improved in terms of accuracy by comparison with certificate values of NIST-2711A reference material. Moreover, these results can be applied for correction of dead-time up to 50% in CNAA method. (author)