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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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Bill to ban Russian uranium imports heads to president
The U.S. Senate approved on April 30, by unanimous consent, a bill banning the importation of Russian uranium. The House of Representatives passed the bill, House Resolution 1042, last fall, and now President Biden is expected to sign it into law.
S. R. Bierman, K. L. Garlid and R. W. Albrecht
Nuclear Science and Engineering | Volume 22 | Number 2 | June 1965 | Pages 206-214
Technical Paper | doi.org/10.13182/NSE65-A20239
Articles are hosted by Taylor and Francis Online.
The complementary nature of pulsed-neutron and reactor-noise techniques in the investigation of reactor dynamic parameters is illuminated by considering the response of a reactor to two types of forcing functions. One of these forcing functions is the impulse function employed in pulsed-neutron studies, while the other is derivable from the inherent randomness of the nuclear events taking place in the reactor. Both the prompt-neutron density following a burst of neutrons into a reactor system and the spectral density of the reactor noise can be expressed in terms of the prompt-neutron decay constant, α. This, in turn, is related to the ratio β/ℓ and the reactivity of the system. Either technique can be used to measure α; however, in practice, each is limited according to a ‘figure of merit’ for a given experimental situation. Measurements made on both subcritical and critical assemblies in the Critical Mass Laboratory at Hanford illustrate the complementary feature of these two techniques and their usefulness in verifying each other's experimental results.