{"article":{"annotation":{"article_id":"us-doe-lithium-precoating-fusion-fuel-retention-study-2026","available_at":"2026-10-16T10:37:40.255087Z","geography_revision":"ef6ee0010dda5fe7b240fd514749b43e214c57da73222d2e40ec83b276dd0977","id":"25fe1b6da16855cb8e4baad17063a1112d0b812e344ba9e4d0d4e70f7fbfa9db","input_sha256":"769e870083190d36a2b77217e6850965fcce73facc226205c3c8fe405687fccc","limitations":["Rule-derived subjects are candidates, not verified editorial labels or calibrated model probabilities.","Coverage is distinct from event location. Unknown country/city/coordinates remain absent; no automatic geocoding.","Article geometries keep their stated precision and methodology; reproducing them is not independent coordinate verification."],"method":"controlled-rules-v1","places":[{"admin1":null,"city":null,"coordinate_note":null,"coordinate_reference_system":"OGC:CRS84","coordinate_source":null,"country":"US","evidence":[{"field":"country","language":"en","note":"Explicit preserved editorial country/region; no city or national centroid inferred","source_urls":["https://www.energy.gov/science/fes/articles/limiting-fuel-retention-lithium-future-fusion-devices"]}],"geometry":null,"id":"iso3166-1:US","kind":"country-or-area","labels":{"ar":"الولايات المتحدة الأمريكية","en":"United States of America","es":"Estados Unidos de América","fr":"États-Unis d’Amérique"},"match_status":"candidate","precision":"regional","role":"coverage","uncertainty_m":null}],"rules_sha256":"fb5ad3c27c91cb840f7a0a05f7f64a5cb26ad0374409ff9457f277c7092e22b4","schema_version":1,"subjects":[{"concept_id":"medtop:20000256","confidence":null,"confidence_method":null,"evidence":[{"field":"category+topics","language":"en","note":"Preserved editorial category/topic; broad candidate only","source_urls":["https://www.energy.gov/science/fes/articles/limiting-fuel-retention-lithium-future-fusion-devices"]}],"method":"controlled-rules-v1","rule_id":"energy-broad","status":"candidate"}],"taxonomy_revision":"1f2db31d811fca07e99b16d402c10e2cc2965c9df1c7b41d9be348b40a24e7fb","taxonomy_version":"IPTC Media Topics 2026-Q2"},"api_url":"https://newsverum.com/api/v1/articles/us-doe-lithium-precoating-fusion-fuel-retention-study-2026?lang=en","category":"energy","content":{"key_points":[],"paragraphs":["The US Department of Energy highlighted research on deuterium retention in the DIII-D tokamak on 15 October. Samples precoated with lithium retained less fuel than samples exposed to lithium-powder injection during operation.","The nine-institution study also points to the importance of avoiding lithium buildup in cold wall regions. The findings come from a 2025 Nuclear Materials and Energy paper, rather than a new commercial reactor result. Researchers plan further work on what happens when lithium and fuel deposits melt."],"sections":[]},"corrections":[],"country":"US","data":{"blocks":[{"description":{"ar":"مقارنة طرق استخدام الليثيوم","de":"Vergleich der Lithium-Aufbringung","en":"Comparison of lithium application methods","es":"Comparación de métodos de aplicación del litio","fr":"Comparaison des méthodes d’application du lithium","pt":"Comparação dos métodos de aplicação de lítio","tr":"Lityum uygulamalarının karşılaştırılması"},"id":"source-record","items":[{"date":"2026-10-15","description":{"ar":"مقارنة طرق استخدام الليثيوم","de":"Vergleich der Lithium-Aufbringung","en":"Comparison of lithium application methods","es":"Comparación de métodos de aplicación del litio","fr":"Comparaison des méthodes d’application du lithium","pt":"Comparação dos métodos de aplicação de lítio","tr":"Lityum uygulamalarının karşılaştırılması"},"label":{"ar":"بحث مواد الاندماج","de":"Fusionsmaterialforschung","en":"Fusion materials research","es":"Investigación de materiales de fusión","fr":"Recherche sur les matériaux de fusion","pt":"Pesquisa de materiais de fusão","tr":"Füzyon malzemeleri araştırması"},"status":"occurred"}],"methodology":{"ar":"تاريخ ملخص الوزارة؛ البحث الأصلي من عام 2025 ويوم التجربة غير محدد. ليست بيانات إنتاج تجاري.","de":"Datum der Ministeriumsübersicht; zugrunde liegender Aufsatz von 2025, Versuchstag nicht angegeben. Keine kommerziellen Produktionsdaten.","en":"Date of the department research highlight; underlying paper dated 2025, experiment day unspecified. Not commercial production data.","es":"Fecha del resumen ministerial; artículo original de 2025, día experimental no indicado. No son datos de producción comercial.","fr":"Date de la synthèse ministérielle; article sous-jacent de 2025, jour d’expérience non précisé. Pas de données de production commerciale.","pt":"Data do resumo ministerial; artigo original de 2025, dia do experimento não informado. Não são dados de produção comercial.","tr":"Bakanlığın araştırma özeti yayımlandığı gün; alttaki makale 2025 tarihli, deney günü belirtilmedi. Ticari üretim verisi değildir."},"sourceUrls":["https://www.energy.gov/science/fes/articles/limiting-fuel-retention-lithium-future-fusion-devices"],"title":{"ar":"بحث مواد الاندماج","de":"Fusionsmaterialforschung","en":"Fusion materials research","es":"Investigación de materiales de fusión","fr":"Recherche sur les matériaux de fusion","pt":"Pesquisa de materiais de fusão","tr":"Füzyon malzemeleri araştırması"},"type":"events","updatedAt":"2026-10-16T10:25:29+00:00"}],"version":1},"data_downloads":[{"formats":{"csv":"https://newsverum.com/api/v1/articles/us-doe-lithium-precoating-fusion-fuel-retention-study-2026/data/source-record?lang=en&format=csv","json":"https://newsverum.com/api/v1/articles/us-doe-lithium-precoating-fusion-fuel-retention-study-2026/data/source-record?lang=en&format=json"},"id":"source-record"}],"data_types":["events"],"editorial_illustration":{"alt":"Conceptual illustration of electricity generation, storage and connected data.","asset_id":"newsverum-v1-energy","avif_variants":[{"height":320,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-480.avif","width":480},{"height":480,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-720.avif","width":720},{"height":640,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-960.avif","width":960},{"height":800,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-1200.avif","width":1200},{"height":1024,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-1536.avif","width":1536}],"credit":"Newsverum","documentary":false,"height":1024,"kind":"symbolic-editorial-illustration","language":"en","scope":"topic","url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-1536.webp","variants":[{"height":320,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-480.webp","width":480},{"height":640,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-960.webp","width":960},{"height":1024,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-1536.webp","width":1536}],"width":1536},"event_id":"event-ef2eed37-733e-5c8c-b2c9-9ae451894dc0","event_period":"2026-10-16","event_period_basis":"source-review","id":"us-doe-lithium-precoating-fusion-fuel-retention-study-2026","image":null,"importance":0.6,"language":"en","modified_at":"2026-10-16T10:36:25+00:00","publication_basis":"publication-record","published_at":"2026-10-16T10:36:25+00:00","reading_minutes":1,"region":"world","section_illustration":{"alt":"Conceptual illustration of electricity generation, storage and connected data.","asset_id":"newsverum-v1-energy","avif_variants":[{"height":320,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-480.avif","width":480},{"height":480,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-720.avif","width":720},{"height":640,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-960.avif","width":960},{"height":800,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-1200.avif","width":1200},{"height":1024,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-1536.avif","width":1536}],"credit":"Newsverum","documentary":false,"height":1024,"kind":"symbolic-editorial-illustration","language":"en","scope":"section","url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-1536.webp","variants":[{"height":320,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-480.webp","width":480},{"height":640,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-960.webp","width":960},{"height":1024,"url":"https://newsverum.com/assets/newsverum/illustrations/v1/energy-1536.webp","width":1536}],"width":1536},"slug":"us-doe-lithium-precoating-fusion-fuel-retention-study-2026","sources":[{"checkedAt":"2026-10-16","name":"US Department of Energy, Fusion Energy Sciences","publishedAt":"2026-10-15","url":"https://www.energy.gov/science/fes/articles/limiting-fuel-retention-lithium-future-fusion-devices"}],"summary":"The US Department of Energy highlighted research on deuterium retention in the DIII-D tokamak on 15 October. Samples precoated with lithium retained less fuel than samples exposed to lithium-powder injection during operation.","text":"The US Department of Energy highlighted research on deuterium retention in the DIII-D tokamak on 15 October. Samples precoated with lithium retained less fuel than samples exposed to lithium-powder injection during operation.\n\nThe US Department of Energy highlighted research on deuterium retention in the DIII-D tokamak on 15 October. Samples precoated with lithium retained less fuel than samples exposed to lithium-powder injection during operation.\n\nThe nine-institution study also points to the importance of avoiding lithium buildup in cold wall regions. The findings come from a 2025 Nuclear Materials and Energy paper, rather than a new commercial reactor result. Researchers plan further work on what happens when lithium and fuel deposits melt.","title":"Lithium precoating retains less fuel than powder injection in fusion study","topics":[],"translations":[{"api_url":"https://newsverum.com/api/v1/articles/us-doe-lithium-precoating-fusion-fuel-retention-study-2026?lang=tr","language":"tr","url":"https://newsverum.com/tr/news/us-doe-lithium-precoating-fusion-fuel-retention-study-2026"},{"api_url":"https://newsverum.com/api/v1/articles/us-doe-lithium-precoating-fusion-fuel-retention-study-2026?lang=en","language":"en","url":"https://newsverum.com/en/news/us-doe-lithium-precoating-fusion-fuel-retention-study-2026"},{"api_url":"https://newsverum.com/api/v1/articles/us-doe-lithium-precoating-fusion-fuel-retention-study-2026?lang=ar","language":"ar","url":"https://newsverum.com/ar/news/us-doe-lithium-precoating-fusion-fuel-retention-study-2026"},{"api_url":"https://newsverum.com/api/v1/articles/us-doe-lithium-precoating-fusion-fuel-retention-study-2026?lang=fr","language":"fr","url":"https://newsverum.com/fr/news/us-doe-lithium-precoating-fusion-fuel-retention-study-2026"},{"api_url":"https://newsverum.com/api/v1/articles/us-doe-lithium-precoating-fusion-fuel-retention-study-2026?lang=es","language":"es","url":"https://newsverum.com/es/news/us-doe-lithium-precoating-fusion-fuel-retention-study-2026"},{"api_url":"https://newsverum.com/api/v1/articles/us-doe-lithium-precoating-fusion-fuel-retention-study-2026?lang=de","language":"de","url":"https://newsverum.com/de/news/us-doe-lithium-precoating-fusion-fuel-retention-study-2026"},{"api_url":"https://newsverum.com/api/v1/articles/us-doe-lithium-precoating-fusion-fuel-retention-study-2026?lang=pt","language":"pt","url":"https://newsverum.com/pt/news/us-doe-lithium-precoating-fusion-fuel-retention-study-2026"}],"url":"https://newsverum.com/en/news/us-doe-lithium-precoating-fusion-fuel-retention-study-2026"},"version":"1"}