Nature of physical problem University of Belfast, N. Ireland (see application form in The program decomposes two-dimensional spectra into the this issue) components of interest and that of background, and evaluates such quantities as volumes, two-dimensional positions Computer: CDC-6500;Installation: JINR, Laboratory of and widths of the components of interest. Computing technique and automation, Dubna Method of solution Operating system: SCOPE The program inputs the models of the components of interest, which may be constructed using either analytical functions, Programming language used: FORTRAN 4 describing the component shape, or experimentally measured histograms, representing that shape, and fits the spectrum High speed storage required: 32 kwords (divided into parts), estimating the characteristics of the relations between the models and the real images in such a way No. of bits in a word: 60 that these estimates determine at the same time the values of quantities of interest: peak volume, position and width. Overlay structure: none Restrictions on the complexity of the problem No of magnetic tapes required: none The maximum number of components in the analyzed spectrum interval = 12. Other peripherals used: card reader, line printer Typical running time No. of cards in combined program and test deck: 2596 The average time is about 10 s per component. Card punching code: BCD yB. Zlokazom' /DOMUS.' Two-dimensional spectra * '4