{"id":8118,"date":"2024-10-16T19:23:22","date_gmt":"2024-10-16T19:23:22","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/astm-e523-2007\/"},"modified":"2024-10-24T10:58:37","modified_gmt":"2024-10-24T10:58:37","slug":"astm-e523-2007","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/astm\/astm-e523-2007\/","title":{"rendered":"ASTM-E523 2007"},"content":{"rendered":"<\/p>\n

1.1 This test method covers procedures for measuring reaction rates by the activation reaction 63<\/sup> Cu(n,) 60<\/sup> Co. The cross section for 60<\/sup> Co produced in this reaction increases rapidly with neutrons having energies greater than about 5 MeV. 60<\/sup> Co decays with a half-life of 1925.28 days (0.5 days) () and emits two gamma rays having energies of 1.1732228 and 1.332492 MeV () . The isotopic content of natural copper is 69.17 % 63<\/sup> Cu and 30.83 % 65<\/sup> Cu () . The neutron reaction, 63<\/sup> Cu(n,) 64<\/sup> Cu, produces a radioactive product that emits gamma rays which might interfere with the counting of the 60<\/sup> Co gamma rays.<\/p>\n

1.2 With suitable techniques, fission-neutron fluence rates above 10 9<\/sup> cm 2<\/sup> s 1<\/sup> can be determined. The 63<\/sup> Cu(n,) 60<\/sup> Co reaction can be used to determine fast-neutron fluences for irradiation times up to about 15 years (for longer irradiations, see Practice E 261).<\/p>\n

1.3 Detailed procedures for other fast-neutron detectors are referenced in Practice E 261.<\/p>\n

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nScope
Referenced Documents
Terminology
Summary of Test Method
Significance and Use <\/td>\n<\/tr>\n
2<\/td>\nApparatus
Materials
Procedure
FIG. 1 <\/td>\n<\/tr>\n
3<\/td>\nCalculations
Report
Precision and Bias
Keywords
REFERENCES <\/p>\n<\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

E523-07 Standard Test Method for Measuring Fast-Neutron Reaction Rates by Radioactivation of Copper<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
ASTM<\/b><\/a><\/td>\n2007<\/td>\n3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":8119,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[464,2637],"product_tag":[],"class_list":{"0":"post-8118","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-27-120-30","7":"product_cat-astm","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/8118","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/8119"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=8118"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=8118"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=8118"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}