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ASTM NDT Committee develops beam divergence measurement standard.

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May 24, 2012 - Recently approved standard ASTM E2861, Test Method for Measurement of Beam Divergence and Alignment in Neutron Radiologic Beams, will be used by neutron imaging facilities, particularly those setting up neutron tomography imaging systems. According to one of subcommittee's members responsible for this standard's development, what ASTM E2861 details "will allow facilities to make corrections to their imaging systems if they are not properly aligned."

Beam Divergence Measurement Standard Developed by ASTM Nondestructive Testing Committee

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Press release date: May 22, 2012

W. CONSHOHOCKEN, Pa.-A recently approved ASTM International standard will be used by neutron imaging facilities, particularly those that are setting up neutron tomography imaging systems. The new standard, ASTM E2861, Test Method for Measurement of Beam Divergence and Alignment in Neutron Radiologic Beams, was developed by Subcommittee E07.05 on Radiology (Neutron) Method, part of ASTM International Committee E07 on Nondestructive Testing.

According to Joshua Vanderstelt, development officer, Nray Services Inc., and an E07 member, ASTM E2861 details the method for construction and use of a device that determines if an imaging plane is perpendicular to a beam line and what the divergence angle is at various positions.

"This standard will allow facilities to make corrections to their imaging systems if they are not properly aligned," says Vanderstelt. "With neutron tomography, this will allow near perfect alignment, improving the three-dimensional constructs produced, and measurement of divergence angles that could be corrected for mathematically."

Vanderstelt invites interested parties to join E07.05. "Currently, we are focused on the development of a standard for the use of image quality indicators for digital neutron imaging," says Vanderstelt. "We are also working on a proposed new standard, ASTM WK27319, for the measurement of boron-10 areal density in aluminum for the purpose of criticality control in spent nuclear fuel storage."

To purchase ASTM standards, visit and search by the standard designation, or contact ASTM Customer Relations (phone: 877-909-ASTM; ASTM International welcomes participation in the development of its standards. For more information on becoming an ASTM member, visit

ASTM International is one of the largest international standards development and delivery systems in the world. ASTM International meets the World Trade Organization (WTO) principles for the development of international standards: coherence, consensus, development dimension, effectiveness, impartiality, openness, relevance and transparency. ASTM standards are accepted and used in research and development, product testing, quality systems and commercial transactions.

For more news in this sector, visit or follow us on Twitter @ASTMMetals.

ASTM Committee E07 Next Meeting: Oct. 18-20, 2012, Reno, Nev. Technical Contact: Joshua Vanderstelt, Nray Services Inc., Dundas, Ontario, Canada, Phone: 905-627-1302, ext. 15;

ASTM Staff Contact: Kathleen McClung, Phone: 610-832-9717; ASTM PR Contact: Barbara Schindler, Phone: 610-832-9603;
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