This material was selected because of its low neutron absorption cross-section.

Some of the fission products, such as xenon-135 and samarium-149, have a high neutron absorption capacity.

Control rods must be further inserted to replace the neutron absorption of the lost xenon-135.

The boron isotope B is responsible for the majority of the neutron absorption.

The density of a neutron image provides information on neutron absorption.

Slowing of fast neutrons will increase the cross section for neutron absorption, reducing the critical mass.

But this does not imply constant neutron absorption.

Xenon-135 was indeed the culprit; it turned out to have an unexpectedly large neutron absorption cross-section.

Technically, studying 3He with neutrons is made very difficult by the huge neutron absorption cross-section.

More steam means less cooling and less neutron absorption, and the problem gets worse.

Wartime experiments included measuring the neutron absorption cross-section of elements and compounds.

A few others are naturally produced by nucleogenic processes (natural nuclear reactions of other types, such as neutron absorption).

The lunar probe also has tools designed to measure temperature and neutron absorption in the moon's darkest corners.

The new calibration curve is parallel to the original one, but considerably displaced from it by what appears to be a neutron absorption effect.

Uranium-233 usually fissions on neutron absorption but sometimes retains the neutron, becoming uranium-234.

Neutron absorption produces a tritium ion, an alpha particle, and kinetic energy.

"Controlling the neutron absorption," he said.

Plutonium and other transuranic isotopes are produced from uranium by neutron absorption during reactor operation.

Heat is produced by the radioactive decay of fission products and materials that have been activated by neutron absorption.

Cadmium is the main element employed for this purpose due to its neutron absorption properties and its easy formability.

It is based on the conversion of the Si-30 isotope into phosphorus atom by neutron absorption as follows:

This excess power causes additional heating thus producing more steam and more cooling means less neutron absorption meaning the problem escalates.

Other trivalent metals would also work, but gallium has a small neutron absorption cross section and helps protect the plutonium against corrosion.

The lithium neutron absorption reaction protects the outer portions of the reactor from the neutron flux.

While assumption of this model are naive, it explains at least qualitatively typical measured energy dependence of neutron absorption cross section.