Ikristale yeScintillation
(Umzobo weLaser ongaphantsi komphezulu)
Izixhobo zokufumanisa ezisekwe kwi-scintillation, besebenzisa ii-pixelated inorganic crystal scintillators,isetyenziswa kakhulu ekufumaneni amasuntswana kunye nemitha, kuquka kwiizikena ze-positron emission tomography (PET).
Ngokongeza iimpawu ezikhokela ukukhanya kwikristale, isisombululo sendawo sesixhobo sokubonaingaphuculwa iye kwisikali se-millimeter, nto leyo ephucula isisombululo siphela se-tomograph.
Nangona kunjalo, indlela yendabuko yokwenzaukwenza iipixeli ngokwasemzimbeniiikristale yiinkqubo enzima, ebiza kakhulu, nenzimaUkongeza, iqhezu lokupakisha kunye novakalelo lwesixhobo sokufumanainokuba sengoziningenxaizixhobo ezibonisa ukukhanya ezingakhanyisiyo ezisetyenzisiweyo.
Ungajonga iPhepha loPhando loqobo apha. (Ukusuka kwiResearchGate)
Ukukrola ngeLaser engaphantsi komhlabaIkristale yeScintillation
Enye indlela kukusebenzisaubuchule bokukrola nge-laser engaphantsi komhlaba (i-SSLE)kwiikristale ze-scintillator.
Ngokujolisa i-laser ngaphakathi kwikristale, ubushushu obuveliswayoinokudala ipatheni elawulwayo yee-microcracksloo ntozisebenza njengezakhiwo ezibonakalisa ukukhanya, ukudala ngempumeleloiiphikseli ezikhokela ukukhanyangaphandle kwesidingo sokwahlukana ngokwasemzimbeni.
1. Akukho mfuneko yokujonga i-pixel ebonakalayo yekristale,ukunciphisa ubunzima kunye neendleko.
2. Iimpawu ezibonakalayo kunye nejometri yezakhiwo ezibonakalisayo zinokubailawulwa ngokuchanekileyo, okuvumela uyilo lweemilo kunye nobukhulu beepikseli ezenziwe ngokwezifiso.
3. Uyilo lokufundwayo kunye nolwakhiwo lwesixhobo sokufumanisazihlala zifana nezo ze-arrays ezisemgangathweni ze-pixelated.
Inkqubo yokuGqiba ngeLaser (i-SSLE) yeScintlator Crystal
Inkqubo yokukrola ye-SSLE ibandakanyala manyathelo alandelayo:
1. Uyilo:
Ukulinganisa kunye noyilo lweuyilo lwe-pixel olufunwayo, kuqukaubukhulukwayeiimpawu ezibonakalayo.
2. Imodeli yeCAD:
Ukudalwa kweimodeli yeCAD eneenkcukachaukusasazwa kwe-microcrack,ngokusekelwe kwiziphumo zokulinganisakwayeiinkcukacha zokuqopha nge-laser.
3. Qala ukukrola:
Ukukrolwa kwangempela kwekristale yeLYSO kusetyenziswa inkqubo yelaser,ikhokelwa yimodeli yeCAD.
Inkqubo yoPhuhliso lwe-SSLE: (A)Imodeli yokulinganisa, (B)Imodeli ye-CAD, (C) i-LYSO eqoshiweyo, (D)Umzobo woMkhukula weNdawo
4. Uvavanyo lweziphumo:
Uvavanyo lokusebenza kwekristale eqingqiweyo kusetyenziswaumfanekiso wentsimi yesikhukulakwayeUkufakelwa kweGaussianukuvavanya umgangatho we-pixel kunye nesisombululo sendawo.
I-Subsurface Laser Engraving ICACISIWEYO KWIMIZUZU EMI-2
Iubuchule bokukrola nge-laser engaphantsi komhlabakwiikristale ze-scintillator zibonelelaindlela yokuguqula izintoekutshintsheni kwe-pixel kwezi zinto.
Ngokubonelela ngolawulo oluchanekileyo kwiimpawu zokukhanya kunye nejometri yezakhiwo ezibonisa ukukhanya, le ndlelayenza kube lula ukuphuhliswa kwezakhiwo ezintsha zokufumanisakunyeisisombululo esiphuculweyo sendawo kunye nokusebenza, konkengaphandleimfuneko yokwenziwa kwe-pixelation ebonakalayo enzima nebiza kakhulu.
Ufuna Ukwazi Okungakumbi malunga:
Ngaba i-Laser Engraving Scintillation Crystal ingaphantsi komhlaba?
Iziphumo ze-SSLE Scintillation Crystal
1. Ukukhanya Okuphuculweyo
Ekhohlo: I-Engraved Surface Reflectivity Asymmetry DoI Overview.
Ekunene: I-Pixel Displacement DoI.
Uthelekiso lweepulses phakathiii-arrays ze-laser ezingaphantsi komhlaba ezikroliweyo (SSLE)kwayeuluhlu oluqhelekileyoibonisaisivuno sokukhanya esingcono kakhulu se-SSLE.
Oku kusenokwenzeka ukuba kungenxaukungabikho kwezinto zokubonakalisa izibane zeplastikiphakathi kwee-pixels, ezinokubangela ukungafani kwe-optical kunye nokulahleka kwe-photon.
Ukuphuculwa kokukhanya kuthethaukukhanya okungakumbi kwiipulses zamandla ezifanayo, okwenza i-SSLE ibe luphawu olunqwenelekayo.
2. Ukuphucula indlela yokuziphatha ngexesha
Umfanekiso weScintillation Crystal
Ubude bekristale buneimpembelelo embi kwixesha, nto leyo ibalulekileyo kwizicelo zePositron Emission Tomography (PET).
Nangona kunjalo,uvakalelo oluphezulu lweekristale ze-SSLEivumela ukusetyenziswa kweiikristale ezimfutshane, enokuthiukuphucula indlela esebenza ngayo inkqubo ngexesha.
Iimodeli zikwacebisa ukuba iimilo ezahlukeneyo ze-pixel, ezifana ne-hexagonal okanye i-dodecagonal, zinokuthikukhokelela ekusebenzeni ngcono kokukhanya kunye nokusebenza kwexesha, efana nemigaqo yeefayibha ze-optical.
3. Iingenelo eziSebenza ngexabiso eliphantsi
Umfanekiso weScintillator Crystal
Xa kuthelekiswa neebhloko ze-monolithic, ixabiso leekristale ze-SSLEingaba sezantsi njengeIkota enyeyeendlekoyoluhlu oluhambelanayo lwe-pixelated, kuxhomekeke kubukhulu be-pixel.
Ukongeza,uvakalelo oluphezulu lweekristale ze-SSLEivumela i-ukusetyenziswa kweekristale ezimfutshane, ukunciphisa ngakumbi iindleko zizonke.
Indlela ye-SSLE ifuna amandla aphantsi e-laser xa ithelekiswa nokusika nge-laser, nto leyo evumela ukubaIinkqubo ze-SSLE ezingabizi kakhuluxa kuthelekiswa nezixhobo zokunyibilikisa okanye zokusika nge-laser.
Iutyalo-mali lokuqala kwiziseko zophuhliso noqeqeshoye-SSLE nayo iphantsi kakhulukuneendleko zokuphuhlisa isixhobo sokubona i-PET.
4. Ukuguquguquka koyilo kunye nokwenza ngokwezifiso
Inkqubo yokuqopha iikristale ze-SSLEayithathi xesha, kunye nomlinganiselo oqikelelweyoimizuzu eli-15kwakufuneka ukukrola uluhlu lwekristale oluyi-12.8x12.8x12 mm, oluyi-3 mm.
Iindalo eguquguqukayo, ukusebenza kakuhle kweendlekokunyeukulungiswa okulula kweekristale ze-SSLEkunye nabo,iqhekeza lokupakisha elingcono kakhulu, hlawulelaisisombululo sendawo esiphantsi kancincixa kuthelekiswa nee-arrays ezisemgangathweni ze-pixelated.
Iijiyometri zePixel ezingezizo ezesiqhelo
I-SSLE ivumela ukuphononongwa kweiijometri zepikseli ezingezizo ezesiqhelo, okuvumela iiphikseli ezikhazimlayo ukubaihambelana ngokuchanekileyo neemfuno ezithile zesicelo ngasinye, njengee-collimators okanye ubukhulu bee-pixels ze-silicon photomultiplier.
Ukwabelana ngokukhanya okulawulwayo
Ukwabelana ngokukhanya okulawulwayo kunokufezekiswa ngokulawula ngokuchanekileyo iimpawu zokukhanya zeendawo ezikroliweyo,ukwenza kube lula ngakumbi ukwenziwa kube lula kwezixhobo zokubona i-gamma.
Uyilo olungaqhelekanga
Uyilo olungaqhelekanga, njengeVoronoi tessellations, zinokubaiqoshwe lula ngaphakathi kweekristale ze-monolithicNgaphezu koko, ukusasazwa okungacwangciswanga kobukhulu bee-pixel kunokwenza ukuba kungeniswe iindlela zokuva ezicinezelweyo, kusetyenziswa ithuba lokwabelana ngokukhanya okubanzi.
Oomatshini bokukrola iLaser phantsi komhlaba
Intliziyo yokwenziwa kweLaser engaphantsi komhlaba ilele kumatshini wokukrola ngelaser. Aba matshini basebenzisai-laser eluhlaza enamandla aphezulu, eyenzelwe ngokukodwaukukrolwa kwelaser engaphantsi komhlaba kwikristale.
IIsisombululo esinye kuphelauya kuze uyidinge kwi-Subsurface Laser Engraving.
InkxasoUqwalaselo olu-6 olwahlukileyo
UkususelaUmntu Othanda Izinto Ezincinci to Imveliso Enkulu
Ukuchaneka Kwendawo Ephindaphindwayo at <10μm
Ubuchule botyandoyokudweba nge-laser ye-3D
Umatshini wokukrola i-3D Crystal Laser(I-SSLE)
Kwi-Subsurface Laser Engraving,ukuchaneka kubalulekileukwenza imifanekiso eqingqiweyo eneenkcukacha nezintsonkothileyo. Umqadi ogxile kwilaserisebenzisana ngokuchanekileyongesakhiwo sangaphakathi sekristale,ukudala umfanekiso we-3D.
Iyaphatheka, Ichanekile kwaye Iphucukile
Umzimba weLaser oQhelekileyoye-SSLE
Ayinakoyikisa & Ikhuselekile Kwabaqalayo
Ukukrola Okukhawulezayo Kwekristaleukuya kuthi ga kwi-3600 amanqaku ngomzuzwana
Ukuhambelana OkuhlekuYilo