There are programs for high-Z shell experiments at the National Ignition Facility (NIF). For shells made of actinide material. a quantitative fission diagnostic is needed in order to determine how much fission took place and whether the fission was sufficient to produce a non-negligible heat source in the burning capsule. Here. https://www.markbroyard.com/hot-save-turbo-air-m3f24-1-n-29-wide-m3-series-reach-in-freezer-featuring-one-solid-door-energy-star-on-sale-top-super/