SPUNIT, a computer code for multisphere unfolding

Conference · Thu Dec 01 04:00:00 EST 1983

OSTI ID:5270491

Brackenbush, L W; Scherpelz, R I

A new computer code has been written to analyze multisphere (Bonner Sphere) measurements for the determination of neutron flux, energy distribution, dose rate, dose equivalent rate and quality factor. The code was designed to analyze the seven detector/moderator configurations used at PNL, using the Sanna response functions. The neutron energies for this code range from thermal to 20.4 MeV, grouped in 26 bins. SPUNIT was written with an internal structure similar to the NRL code, YOGI, but the basic unfolding algorithm is based on a iterative technique using information theory. The code has been implemented in two versions: a FORTRAN version that runs on a DEC PDP-11/24 minicomputer, and a BASIC version that runs on a Hewlett-Packard HP-87 personal computer. This paper presents the mathematical model used in SPUNIT, and results from typical SPUNIT calculations will also be presented.

• Research Organization: Pacific Northwest Lab., Richland, WA (USA)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 5270491
• Report Number(s): PNL-SA-11645; CONF-840202-13; ON: DE84006576
• Country of Publication: United States
• Language: English

Related Subjects

440103* -- Radiation Instrumentation-- Nuclear Spectroscopic Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BONNER SPHERE SPECTROMETERS
COMPUTER CODES
DATA PROCESSING
FORTRAN
ITERATIVE METHODS
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
NEUTRON SPECTROMETERS
PROCESSING
PROGRAMMING LANGUAGES
S CODES
SPECTRA UNFOLDING
SPECTROMETERS