{"id":6100,"date":"2026-09-30T09:15:01","date_gmt":"2026-09-30T07:15:01","guid":{"rendered":"https:\/\/www.woodresearch.sk\/cms\/?p=6100"},"modified":"2026-09-30T09:15:03","modified_gmt":"2026-09-30T07:15:03","slug":"investigation-of-gamma-radiation-shielding-properties-of-acacia-mangium-wood-from-sabah-malaysia","status":"publish","type":"post","link":"https:\/\/www.woodresearch.sk\/cms\/investigation-of-gamma-radiation-shielding-properties-of-acacia-mangium-wood-from-sabah-malaysia\/","title":{"rendered":"Investigation of Gamma Radiation Shielding Properties of Acacia Mangium Wood from Sabah, Malaysia"},"content":{"rendered":"\n
<\/a><\/div><\/div>\n","protected":false},"excerpt":{"rendered":"

Gamma radiation shielding properties of Acacia mangium wood (ages 3 – 15 years) were investigated at 662 keV (\u00b9\u00b3\u2077Cs). Mass attenuation coefficients, linear attenuation (\u00b5), and half-thickness were measured; the attenuation properties were discussed include linear attenuation (\u00b5) and mass attenuation (\u00b5\/\u03c1). Additionally, the paper will explore the feasibility of substituting traditional shielding materials, such as concrete and copper, with these tropical wood species for low-energy gamma-ray diagnostic applications. Two mathematical models have been developed to predict wood density based on variations in relaxation length and half-thickness values. The results indicate that the three-year-old Acacia mangium tree has the\u00a0longest relaxation length at 83.33 cm and the lowest density at 0.43 g\/cm\u00b3. In contrast, the\u00a015-year-old tree has the shortest relaxation length of 28.56 cm and the highest density at 0.76 g\/cm\u00b3. Furthermore, the results show that the 3-year-old Acacia mangium tree’s wood has the maximum half-thickness value (57.75 cm), while the fifteen-year-old tree’s wood has the\u00a0lowest half-thickness value (about 19.85 cm). A good agreement (greater than 85% in most cases) was observed between the measured values and predicted ones. A strong linear correlation was observed between the measured density and the age of the tree (R\u00b2 = 0.824), as well as between the estimated density and the age of Acacia mangium trees (R\u00b2 = 0.952). Acacia mangium shows potential as a sustainable gamma shielding material for low-energy applications.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5628],"tags":[5100,5710,5712,5711,938],"release_year":[5476],"ppma_author":[5700,5701,5702,5703,5704],"class_list":["post-6100","post","type-post","status-publish","format-standard","hentry","category-wood-research-volume-71-number-3-2026","tag-acacia-mangium","tag-half-thickness-value","tag-linear-attenuation-coefficient","tag-relaxation-length","tag-wood-density","release_year-5476"],"featured_image_src":null,"author_info":{"display_name":"Ivanke","author_link":"https:\/\/www.woodresearch.sk\/cms\/author\/ivanke\/"},"authors":[{"term_id":5700,"user_id":0,"is_guest":1,"slug":"thamer-a-thabet","display_name":"Thamer A. Thabet","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g","0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""},{"term_id":5701,"user_id":0,"is_guest":1,"slug":"normah-awang-besar","display_name":"Normah Awang Besar","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g","0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""},{"term_id":5702,"user_id":0,"is_guest":1,"slug":"affendy-hassan","display_name":"Affendy Hassan","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g","0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""},{"term_id":5703,"user_id":0,"is_guest":1,"slug":"mohamadu-boyie-jalloh","display_name":"Mohamadu Boyie Jalloh","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g","0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""},{"term_id":5704,"user_id":0,"is_guest":1,"slug":"nur-fadzlunisaa-wakimin","display_name":"Nur Fadzlunisaa Wakimin","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/?s=96&d=mm&r=g","0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""}],"_links":{"self":[{"href":"https:\/\/www.woodresearch.sk\/cms\/wp-json\/wp\/v2\/posts\/6100","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.woodresearch.sk\/cms\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.woodresearch.sk\/cms\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.woodresearch.sk\/cms\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.woodresearch.sk\/cms\/wp-json\/wp\/v2\/comments?post=6100"}],"version-history":[{"count":1,"href":"https:\/\/www.woodresearch.sk\/cms\/wp-json\/wp\/v2\/posts\/6100\/revisions"}],"predecessor-version":[{"id":6102,"href":"https:\/\/www.woodresearch.sk\/cms\/wp-json\/wp\/v2\/posts\/6100\/revisions\/6102"}],"wp:attachment":[{"href":"https:\/\/www.woodresearch.sk\/cms\/wp-json\/wp\/v2\/media?parent=6100"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.woodresearch.sk\/cms\/wp-json\/wp\/v2\/categories?post=6100"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.woodresearch.sk\/cms\/wp-json\/wp\/v2\/tags?post=6100"},{"taxonomy":"release_year","embeddable":true,"href":"https:\/\/www.woodresearch.sk\/cms\/wp-json\/wp\/v2\/release_year?post=6100"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/www.woodresearch.sk\/cms\/wp-json\/wp\/v2\/ppma_author?post=6100"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}