%0 Journal Article
%@holdercode {isadg {BR SPINPE} ibi 8JMKD3MGPCW/3DT298S}
%@nexthigherunit 8JMKD3MGPCW/3ETR8EH
%@archivingpolicy denypublisher denyfinaldraft24
%@dissemination PORTALCAPES; COMPENDEX.
%X X- and gamma-ray astronomy experiments which employ rectangular URA coded masks alone show artifacts in the images reconstructed due to nonuniform background levels in the detector plane. The employment of a separate antimask in addition to the mask in observations is useful to eliminate this problem. We propose here a method to implement the antimask with the same mask, utilizing the antisymmetric properties in the mask pattern, thereby avoiding the need for a separate antimask in an experiment. Simulations performed with this mask-antimask system are presented to show its advantages.
%8 Dec.
%N 3
%@secondarydate 19960325
%T Physical implementation of an antimask in URA based coded mask systems
%K X-ray, gamma-ray, URA based coded mask systems.
%@secondarytype PRE PI
%@usergroup administrator
%@usergroup jefferson
%@group DAS-INPE-BR
%@secondarykey INPE-5338-PRE/1737
%F 3040
%@issn 0168-9002
%2 sid.inpe.br/iris@1905/2005/07.28.21.35.34
%B Nuclear Instruments and Methods in Physics Research A
%@versiontype publisher
%P 685-689
%4 sid.inpe.br/iris@1905/2005/07.28.21.35.32
%@documentstage not transferred
%D 1991
%V 310
%A Jayanthi, Udaya Baskharam,
%A Braga, Joao,
%@area CEA