{"id":8937,"date":"2025-03-18T08:40:55","date_gmt":"2025-03-18T07:40:55","guid":{"rendered":"https:\/\/websrv.saske.sk\/uef\/?p=8937"},"modified":"2025-03-18T08:40:55","modified_gmt":"2025-03-18T07:40:55","slug":"van-allenove-radiacne-pasy-zeme-otestovali-slovensky-detektor","status":"publish","type":"post","link":"https:\/\/websrv.saske.sk\/uef\/van-allenove-radiacne-pasy-zeme-otestovali-slovensky-detektor\/","title":{"rendered":"Van Allenove radia\u010dn\u00e9 p\u00e1sy Zeme otestovali slovensk\u00fd detektor"},"content":{"rendered":"<p><b>Vesm\u00edrna sonda JUICE, ktor\u00e1 k plan\u00e9te Jupiter od\u0161tartovala v apr\u00edli 2023, sa po eliptickej orbite okolo Slnka vr\u00e1tila v auguste 2024 k svojej materskej plan\u00e9te Zem pre\u00a0<u><a href=\"https:\/\/www.sav.sk\/?lang=sk&amp;doc=services-news&amp;source_no=20&amp;news_no=12136\">prv\u00fa gravita\u010dn\u00fa asistenciu<\/a><\/u>. Bl\u00edzke prelety okolo plan\u00e9t slne\u010dnej s\u00fastavy, tie\u017e zn\u00e1me ako\u00a0\u201egravita\u010dn\u00e9 praky\u201c\u00a0sondu ur\u00fdchlia tak, aby Jupiter dosiahla v j\u00fali 2031. Na to bud\u00fa potrebn\u00e9 e\u0161te tri gravita\u010dn\u00e9 asistencie, najbli\u017e\u0161ie ju bude ur\u00fdch\u013eova\u0165 Venu\u0161a a\u00a0nesk\u00f4r e\u0161te dvakr\u00e1t Zem.<\/b><\/p>\n<p>Vla\u0148aj\u0161\u00ed bl\u00edzky prelet okolo Zeme vo v\u00fd\u0161ke 6840 km nad Tich\u00fdm oce\u00e1nom bol aj pr\u00edle\u017eitos\u0165ou na testovanie a kalibr\u00e1ciu viacer\u00fdch vedeck\u00fdch aparat\u00far sondy. Medzi nimi bola aj \u010dasticov\u00e1 aparat\u00fara PEP, ktorej s\u00fa\u010das\u0165ou je antikoinciden\u010dn\u00fd detektor ACM, skon\u0161truovan\u00fd v ko\u0161ickom \u00dastave experiment\u00e1lnej fyziky\u00a0 SAV, v. v. i., s podporou pr\u00edstupov\u00e9ho procesu PECS-Slovakia k Eur\u00f3pskej vesm\u00edrnej agent\u00fary ESA.<\/p>\n<p><i>\u201e\u00dalohou detektora ACM je detekcia energetick\u00fdch elektr\u00f3nov v\u00a0magnetosf\u00e9re Jupitera, ktor\u00e9 dok\u00e1\u017eu hlboko prenika\u0165 cez tieniaci pl\u00e1\u0161\u0165 vedeck\u00fdch pr\u00edstrojov. Detektor ACM umo\u017en\u00ed odl\u00ed\u0161i\u0165 tieto ru\u0161iv\u00e9 elektr\u00f3ny od plazmov\u00fdch \u010dast\u00edc n\u00edzkych energi\u00ed, \u010do je nutn\u00e9 pre kvalitn\u00fd z\u00e1znam vedeck\u00fdch d\u00e1t,\u201c<\/i>\u00a0uviedol kon\u0161trukt\u00e9r detektora J\u00e1n Bal\u00e1\u017e z\u00a0\u00dastavu experiment\u00e1lnej fyziky SAV, v. v. i.<\/p>\n<p>S\u00fa\u010das\u0165ou bl\u00edzkeho preletu okolo Zeme bol dvojn\u00e1sobn\u00fd tranzit sondy cez vonkaj\u0161\u00ed Van Allenov radia\u010dn\u00fd p\u00e1s, v\u00a0ktorom magnetick\u00e9 pole Zeme zadr\u017eiava elektr\u00f3ny vysok\u00fdch energi\u00ed. Ned\u00e1vna anal\u00fdza d\u00e1t a\u00a0kalibr\u00e1cia s palubn\u00fdm radia\u010dn\u00fdm monitorom RADEM potvrdzuje, \u017ee detektor ACM rob\u00ed presne to, \u010do sa od neho o\u010dak\u00e1va, spo\u013eahlivo registruje energetick\u00e9 elektr\u00f3ny a\u00a0ich sekund\u00e1rne produkty, prenikaj\u00face hlboko do aparat\u00fary PEP.<\/p>\n<p><i>\u201eDetektor ACM v tejto f\u00e1ze letu pracoval iba s jedn\u00fdm energetick\u00fdm prahom 90 kiloelektr\u00f3nvoltov (keV). E\u0161te kvalitnej\u0161iu kalibr\u00e1ciu pl\u00e1nujeme skenovan\u00edm energetick\u00fdch prahov v jeho celom rozsahu od 54 keV do 320 keV. V tom n\u00e1m ale Venu\u0161a v auguste 2025 nepom\u00f4\u017ee, ke\u010f\u017ee nem\u00e1 magnetick\u00e9 pole a teda ani Van Allenove radia\u010dn\u00e9 p\u00e1sy. Tak\u017ee si mus\u00edme po\u010dka\u0165 na \u010fal\u0161\u00ed prelet okolo Zeme v septembri 2026,\u201c<\/i>\u00a0spresnil vedec.<\/p>\n<p>&nbsp;<\/p>\n<p>Prevzat\u00e9 z <a href=\"https:\/\/www.sav.sk\/?lang=sk&amp;doc=services-news&amp;source_no=20&amp;news_no=12661\">Atkuality SAV<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vesm\u00edrna sonda JUICE, ktor\u00e1 k plan\u00e9te Jupiter od\u0161tartovala v apr\u00edli 2023, sa po eliptickej orbite okolo Slnka vr\u00e1tila v auguste 2024 k svojej materskej plan\u00e9te&#8230;<\/p>\n","protected":false},"author":11,"featured_media":8938,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/websrv.saske.sk\/uef\/wp-json\/wp\/v2\/posts\/8937"}],"collection":[{"href":"https:\/\/websrv.saske.sk\/uef\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/websrv.saske.sk\/uef\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/websrv.saske.sk\/uef\/wp-json\/wp\/v2\/users\/11"}],"replies":[{"embeddable":true,"href":"https:\/\/websrv.saske.sk\/uef\/wp-json\/wp\/v2\/comments?post=8937"}],"version-history":[{"count":1,"href":"https:\/\/websrv.saske.sk\/uef\/wp-json\/wp\/v2\/posts\/8937\/revisions"}],"predecessor-version":[{"id":8939,"href":"https:\/\/websrv.saske.sk\/uef\/wp-json\/wp\/v2\/posts\/8937\/revisions\/8939"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/websrv.saske.sk\/uef\/wp-json\/wp\/v2\/media\/8938"}],"wp:attachment":[{"href":"https:\/\/websrv.saske.sk\/uef\/wp-json\/wp\/v2\/media?parent=8937"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/websrv.saske.sk\/uef\/wp-json\/wp\/v2\/categories?post=8937"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/websrv.saske.sk\/uef\/wp-json\/wp\/v2\/tags?post=8937"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}