Crystal ea scintillation
(Mongolo o ka tlase oa Laser)
Lisebelisoa tse thehiloeng ho scintillation, sebelisa pixelated inorganic crystal scintillators, bae sebedisoang haholo bakeng sa ho lemoha maqeba le mahlaseli, ho akarelletsa le holi-scanner tsa positron emission tomography (PET)..
Ka ho eketsa likarolo tse tataisang leseli ho kristale, tharollo ea sebaka sa detectore ka ntlafatsoa ho isa tekanyong ea millimeter, ho ntlafatsa qeto ea kakaretso ea tomograph.
Leha ho le joalo, mokhoa oa setso oapixelating mmelenglikristale ke ats'ebetso e rarahaneng, e theko e boima ebile e boima. Ho feta moo, karolo ea ho paka le kutloisiso ea detectore ka sekisetsoaka lebaka lasesebedisoa se bonahang se sa cheseheng se sebedisoang.
U ka sheba Pampiri ea Pele ea Lipatlisiso Mona. (Ho tsoa ho ResearchGate)
Subsurface Laser Engraving bakeng saCrystal ea scintillation
Mokhoa o mong ke oa ho sebelisaMekhoa ea ho ngola ka laser ea subsurface (SSLE).bakeng sa likristale tsa scintillator.
Ka ho lebisa tlhokomelo ea laser ka hare ho kristale, mocheso o ile oa hlahisae ka theha mokhoa o laoloang oa li-microcrackshoresebetsa joalo ka meaho e bonahatsang, ka katleho ho bopalipikselse tse tataisang leselintle le tlhokeho ya karohano ya mmele.
1. Ha ho na pixelation ea 'mele ea kristale e hlokahalang,ho fokotsa ho rarahana le litšenyehelo.
2. Litšobotsi tsa optical le geometry ea mehaho e bonahatsang e ka bae laoloang hantle, e nolofalletsang moralo oa libopeho le boholo ba pixel e tloaelehileng.
3. Mehaho ea ho bala le ea detectorlula e tšoana le bakeng sa lihlopha tse tloaelehileng tsa pixelated.
Laser Engraving Process (SSLE) bakeng sa Scintillator Crystal
Mokhoa oa ho betla oa SSLE o kenyelletsamehato e latelang:
1. Moralo:
Ketsiso le moralo oameralo ea pixel e lakatsehang, ho kenyeletsalitekanyolelitšobotsi tsa optical.
2. Mohlala oa CAD:
Pōpo ea alintlha tse qaqileng tsa mohlala oa CADkabo ea microcrack,ho ipapisitsoe le liphetho tsa ketsisolelitlhaloso tsa laser engraving.
3. Qala ho Engraving:
Ho betloa ha 'nete ha kristale ea LYSO e sebelisa sistimi ea laser,tataisoa ke mohlala oa CAD.
Mokhoa oa Ntlafatso ea SSLE: (A)Moetso oa Ketsiso, (B)Mohlala oa CAD, (C) O Fetile LYSO, (D) Setšoantšo sa Moroallo oa Tšimo
4. Tekolo ea Sephetho:
Tekolo ea ts'ebetso ea kristale e betliloeng ka ho sebelisa asetšoantšo sa lebala la likhoholaleGaussian e loketsengho lekola boleng ba pixel le qeto ea sebaka.
Sefako sa Laser se fatiloeng se HLALOsitsoe ka Metsotso e 2
Themokhoa oa ho ngola ka tlas'a lefatše oa laserbakeng sa likristale tsa scintillator e fana kamokhoa oa phetohoho pixelation ea lisebelisoa tsena.
Ka ho fana ka taolo e nepahetseng holim'a litšobotsi tsa optical le geometry ea mehaho e bonahatsang, mokhoa onae thusa ho nts'etsapele meralo e ncha ea detectorkatharollo e ntlafalitsoeng ea sebaka le ts'ebetso, kaofelantle letlhokahalo ea pixelation e rarahaneng le e theko e boima ea 'mele.
U Batla ho Tseba Haholoanyane ka:
Crystal e Ngola ka Scintillation ea Laser e ka tlas'a lefatše?
Liphuputso tsa SSLE Scintillation Crystal
1. Kotulo ea Leseli e Ntlafetseng
Ka ho le letšehali: Tlhaloso ea Bokaholimo e Behiloeng ka Asymmetry DoI.
Ka ho le letona: Pixel Displacement DoI.
Papiso ea li-pulses lipakeng tsasubsurface laser engraved (SSLE) arrayslelihlopha tse tloaelehilenge bontša atlhahiso e ntle haholo ea khanya bakeng sa SSLE.
Sena se ka etsahala ka lebaka laho ba sieo ha li-reflectors tsa polasetikipakeng tsa lipikselse, tse ka bakang ho se lumellane ha optical le tahlehelo ea photon.
Tlhahiso e ntlafalitsoeng ea leseli e bolelakhanya e eketsehileng bakeng sa maqhubu a matla a tšoanang, ho etsa hore SSLE e be semelo se lakatsehang.
2. Boitšoaro bo Ntlafetseng ba Nako
Setšoantšo sa Scintillation Crystal
Bolelele ba kristale bo na le aphello e kotsi ho nako, e leng ea bohlokoa bakeng sa likopo tsa Positron Emission Tomography (PET).
Leha ho le joalo, thekutloisiso e phahameng ea likristale tsa SSLElumella bakeng sa tshebediso yalikristale tse khuts'oane, e ka khonangntlafatsa boemo ba nako ea tsamaiso.
Lipapiso li boetse li khothalelitse hore libopeho tse fapaneng tsa pixel, joalo ka hexagonal kapa dodecagonal, mohlomonge lebisa ho ts'ebetso e ntle ea tataiso le nako, e tšoanang le melao-motheo ea optical fibers.
3. Melemo e sa sebetseng hantle
Setšoantšo sa Scintillator Crystal
Ha ho bapisoa le li-blocks tsa monolithic, theko ea likristale tsa SSLEe ka ba tlase joalo kangoe borarongea litšenyeheloea sehlopha se lumellanang sa pixelated, ho latela boholo ba pixel.
Ho feta moo, thekutloisiso e phahameng ea likristale tsa SSLElumella bakeng satshebediso ya dikristale tse kgutshwane, ho fokotsa litšenyehelo ka kakaretso.
Mokhoa oa SSLE o hloka matla a tlase a laser ha a bapisoa le ho itšeha ka laser, ho lumellalitsamaiso tse theko e tlase tsa SSLEha e bapisoa le lisebelisoa tsa laser tse qhibilihang kapa tsa ho itšeha.
Thematsete a pele ho meralo ea motheo le koetlisobakeng sa SSLE le eona e tlase haholoho feta litšenyehelo tsa ho etsa mochine oa PET.
4. Moralo Flexibility le Customization
Mokhoa oa ho betla likristale tsa SSLE kee sa jeng nako, ka hoo e ka bangMetsotso e 15ho hlokahala ho ngola 12.8x12.8x12 mm, 3-crystal array.
Thetenyetsehang tlhaho, ho baballa litšenyehelo, leboiketlo ba ho lokisa likristale tsa SSLE, hammoho le bonakarolo e phahameng ea ho paka, buseletsa bakeng satharollo ya sebaka se tlase hanyaneha e bapisoa le lihlopha tse tloaelehileng tsa pixelated.
Li-Geometri tsa Pixel tse sa Tloaelehang
SSLE e lumella ho batlisisali-geometri tsa pixel tse sa tloaelehang, e nolofalletsang lipikselse tse khanyang ho bae tsamaellanang hantle le litlhoko tse khethehileng tsa kopo ka 'ngoe, joalo ka li-collimator kapa boholo ba lipikselse tsa silicon photomultiplier.
Karolelano ea Leseli e Laolehileng
Ho arolelanoa ha leseli ho laoloang ho ka finyelloa ka ho qhekella ka nepo litšobotsi tsa optical tsa libaka tse betliloeng,ho nolofatsa ts'ebetso e eketsehileng ea miniaturization ea li-detectors tsa gamma.
Meetso e Meholo
Meetso e makatsang, joalo ka Voronoi tessellations, e ka bae ngotsoe habonolo ka har'a likristale tsa monolithic. Ho feta moo, kabo e sa reroang ea boholo ba pixel e ka thusa ho tsebahatsa mekhoa e hatelitsoeng ea ho utloa, ho nka monyetla oa ho arolelana khanya ho pharaletseng.
Mechini ea ho Fana ka Laser ea Subsurface
Pelo ea pōpo ea Laser ea Subsurface e ka har'a mochini o betlang oa laser. Mechini ena e sebetsalaser e tala e matla haholo, e etselitsoeng ka ho khethehasubsurface laser fatiloeng ka kristale.
TheOne & Feela Tharollou tla ke u hloke bakeng sa Subsurface Laser Engraving.
Tšehetsa6 Litlhophiso tse fapaneng
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Mochini o betliloeng oa Crystal Laser oa 3D(SSLE)
Bakeng sa ho Engraving ka Laser ea Subsurface,ho nepahala ho bohlokoabakeng sa ho etsa litšoantšo tse hlakileng le tse rarahaneng. Leseli le tsepamisitsoeng la lasere sebelisana hantleka sebopeho sa ka hare sa kristale,ho theha setšoantšo sa 3D.
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