A novel spectrograph comprised of a transmission grating, toroidal mir
ror, and microchannel plate detector is presented here. It is capable
of detecting spectra in the wavelength range from 5 to 150 angstrom wi
th a resolution of about 1.5 angstrom. Owing it to high efficiency, ev
en an x-ray spectrum of a low-energy laser produced plasma, i.e., emis
sion of the order of 10(-10) J/sr, can be measured in a single shot.