The influence of contaminants is one of the factors hindering self-sustained thermonuclear burn in inertial confinement fusion. Here, the authors present evidence, through simulations and experiments, that contaminants do not fully reach thermal equilibrium, and thus their amount is usually underestimated.
Nuclear and particle physics
The study of atomic nuclei is by now a very active and developed field, with both fundamental and technological implications. Its more fundamental spin-off, particle physics, while constantly refining the impressive building of the Standard Model, is trying to come to grips with mysteries like dark matter or neutrino masses. Within this page, we will highlight our latest most interesting papers within these areas.
Second order effects can play an important role in highlighting nuclear structure properties. Here, the authors show how the second-order nuclear transitions in the form of double-gamma decay in 137Ba help understanding atomic nuclei.
Triuranium disilicide fuel and silicon carbide cladding system is of importance for accident tolerance fuel initiative. Here the authors discuss the role of interface interaction between the U3Si2 fuel and SiC cladding in their use as an advanced concept in light water reactors.
Inspection and authentication of warheads is important for nuclear safety and security. Here the authors report experimental scheme for the verification of nuclear warheads using the neutron resonance transmission analysis of a reference and candidate objects while preserving the sensitive information.
Generating keV ion distributions for nuclear reactions at near solid-density using intense short-pulse lasers
Studying nuclear reactions in an astrophysical plasma environment is challenging but laboratory experiments can mimic such extreme conditions. Here the authors discuss the potential use of intense laser-produced dense plasma to find the rates of nuclear reactions in plasma-screened conditions.
Nuclear reactors can be used for energy generation or for dangerous weapons and therefore their monitoring is crucial. Here the authors discuss detecting antineutrino from a nuclear reactor and use it for nuclear safeguards in a diversion scenario.
Octupole deformation in nuclei is important to understand nuclear structure and electric dipole moments of heavy atoms. Here the authors measure energies of excited quantum states in radon isotopes and find that these isotopes do not provide favourable conditions in the search for CP-violation.
Experimental limit on an exotic parity-odd spin- and velocity-dependent interaction using an optically polarized vapor
Symmetry breaking is an important process in fundamental understanding of matter and dark matter. Here the authors discuss an experimental bound on an exotic parity odd spin- and velocity-dependent interaction between electron and nucleon by using a sensitive spin-exchange relaxation-free atomic magnetometer.
Stand-off nuclear reactor monitoring with neutron detectors for safeguards and non-proliferation applications
Nuclear power reactors need to be monitored for safety and security while in operation. Here the authors discuss monitoring and safeguarding research reactors and small modular reactors using detection of neutrons up to a hundred meters away from the reactor shielding.
Magic numbers are associated with the stability of atomic nuclei. Here, the authors analyse the proton radii, binding energies and electric quadrupole transition rates of neutron-rich carbon isotopes at proton number six and use nuclear structure models to support the magic number Z = 6.