{"id":39231,"date":"2024-10-17T05:37:12","date_gmt":"2024-10-17T05:37:12","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/astm-e523-2011\/"},"modified":"2024-10-24T15:19:43","modified_gmt":"2024-10-24T15:19:43","slug":"astm-e523-2011","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/astm\/astm-e523-2011\/","title":{"rendered":"ASTM-E523 2011"},"content":{"rendered":"

ASTM E523-11<\/h3>\n

Historical Standard: Standard Test Method for Measuring Fast-Neutron Reaction Rates by Radioactivation of Copper<\/h4>\n
\n

ASTM E523<\/h4>\n

Scope<\/strong><\/p>\n

1.1 This test method covers procedures for measuring reaction rates by the activation reaction 63<\/sup>Cu(n,\u03b1<\/span>)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 1925.27 days (\u00b1<\/span>0.29 days)(1)<\/span> and emits two gamma rays having energies of 1.1732278 and 1.332492 MeV (1)<\/span>. The isotopic content of natural copper is 69.17 % 63<\/sup>Cu and 30.83 % 65<\/sup>Cu (2)<\/span>. The neutron reaction, 63<\/sup>Cu(n,\u03b3<\/span>)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 109<\/sup> cm\u2212<\/span>2<\/sup>\u00b7<\/span>s\u2212<\/span>1<\/sup> can be determined. The 63<\/sup>Cu(n,\u03b1<\/span>)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 E261).<\/p>\n

1.3 Detailed procedures for other fast-neutron detectors are referenced in Practice E261.<\/p>\n

1.4 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.<\/span><\/p>\n

Keywords<\/strong><\/p>\n

activation; activation reaction; copper; cross section; dosimetry; fast-neutron monitor; neutron metrology; pressure vessel surveillance; reaction rate; Fast neutron flux\/fluence; Copper; Neutron activation reactions; Radioactivation–fast neutron flux; Threshold detectors–5 MeV; Titanium (Ti)\/alloys<\/p>\n

ICS Code<\/strong><\/p>\n

ICS Number Code 17.240 (Radiation measurements)<\/p>\n

DOI:<\/strong> 10.1520\/E0523-11<\/p>\n<\/div>\n

PDF Catalog<\/h4>\n\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
Calculations
FIG. 1 <\/td>\n<\/tr>\n
3<\/td>\nReport
Precision and Bias
Keywords <\/td>\n<\/tr>\n
4<\/td>\nREFERENCES
FIG. 2 <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

E523-11 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>\n2011<\/td>\n4<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":39232,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2637],"product_tag":[],"class_list":{"0":"post-39231","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-astm","8":"first","9":"instock","10":"sold-individually","11":"shipping-taxable","12":"purchasable","13":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/39231","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\/39232"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=39231"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=39231"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=39231"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}