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Long half-lives relevant to nuclear waste disposal

Long half-lives relevant to nuclear waste disposal

JRC scientists standardised the activity concentration of three fission products (129I, 151Sm, and 166mHo) potentially present in nuclear waste. This work will result in new and eventually more accurate determination of the half-lives of these three radionuclides.

Accurate nucleardecay data, such as half-lives, are important input parameters in the development of technical solutions for safe…

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Uranium 'age-dating' in nuclear safeguards and nuclear forensics

Uranium ‘age-dating’ in nuclear safeguards and nuclear forensics

JRC scientists carried out the methodology, preparation, target characteristics and certification of the first uranium reference materials certified for their production date.

To avoid the illicit use of nuclear materials, EURATOM and international safeguards authorities have set up systems to verify the correctness and completeness of States’ declarations about nuclear-related activities. The…

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How complex is the nuclear fission barrier? A challenge for nuclear fission theory

How complex is the nuclear fission barrier? A challenge for nuclear fission theory

The investigation of fission fragment properties as a function of nuclear temperature shows that fragment mass and total kinetic energy depend on the angle relative to the incident neutron vector. This might be interpreted as the first experimental evidence for a nuclear fission barrier, which is more complex than hitherto believed.

Fission occurs when a compound system has gained enough energy…

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