Uncertainty propagation from raw data to final results. [ALEX]
Reduction of data from raw numbers (counts per channel) to physically meaningful quantities (such as cross sections) is in itself a complicated procedure. Propagation of experimental uncertainties through that reduction process has sometimes been perceived as even more difficult, if not impossible. At the Oak Ridge Electron Linear Accelerator, a computer code ALEX has been developed to assist in the propagation process. The purpose of ALEX is to carefully and correctly propagate all experimental uncertainties through the entire reduction procedure, yielding the complete covariance matrix for the reduced data, while requiring little additional input from the experimentalist beyond that which is needed for the data reduction itself. The theoretical method used in ALEX is described, with emphasis on transmission measurements. Application to the natural iron and natural nickel measurements of D.C. Larson is shown.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5471812
- Report Number(s):
- CONF-850507-11; ON: DE85011937
- Resource Relation:
- Conference: International conference on nuclear data for basic and applied science, Santa Fe, NM, USA, 13 May 1985
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
COMPUTER CODES
A CODES
DATA COVARIANCES
DATA ANALYSIS
IRON
NICKEL
TRANSMISSION
ELEMENTS
METALS
TRANSITION ELEMENTS
651100* - Nuclear Physics- Experimental Techniques- (1980-)
990200 - Mathematics & Computers