nexus-tools binary package in Ubuntu Focal riscv64

 NeXus is a common data format for neutron, X-ray, and muon science. It
 is being developed as an international standard by scientists and
 programmers representing major scientific facilities in Europe, Asia,
 Australia, and North America in order to facilitate greater cooperation
 in the analysis and visualization of neutron, X-ray, and muon data.
 .
 This is the package containing some applications for reading and writing
 NeXus files.

Source package