Iinkqubo ze-X-reyi ezibandayo zinamandla okuguqula iteknoloji yetyhubhu ye-X-reyi, ngaloo ndlela iphazamisa imarike yokucinga yezonyango.Iityhubhu zeX-reyi ziyinxalenye ebalulekileyo yezixhobo zonyango, ezisetyenziselwa ukuvelisa ii-x-reyi ezifunekayo ukwenza imifanekiso yoxilongo.Itekhnoloji yangoku ixhomekeke kwi-cathodes eshushu, kodwa iisistim ezibandayo ze-cathode zibonisa umtshini womdlalo onokubakho kule ndawo.
NgokwemveliImibhobho ye-X-ray sebenza ngokufudumeza i-filament kwiqondo lokushisa eliphezulu, elikhupha ii-electron.Ezi electron zikhawuleza ukuya kwindawo ekujoliswe kuyo, edla ngokwenziwa nge-tungsten, zivelisa ii-X-reyi phezu kwempembelelo.Nangona kunjalo, le nkqubo ineengxaki ezininzi.Amaqondo obushushu aphezulu afunekayo ekukhupheni ii-elektroni anciphisa ubomi beetyhubhu, njengoko ukufudumeza rhoqo kunye nokupholisa kubangela uxinzelelo lwe-thermal kunye nokuhla.Ukongezelela, inkqubo yokufudumala yenza kube nzima ukukhawuleza ukucima ityhubhu ye-X-ray, ukwandisa ixesha elifunekayo kwinkqubo yokucinga.
Ngokwahlukileyo, iinkqubo ezibandayo ze-X-ray ze-cathode zisebenzisa umthombo we-electron wokukhupha intsimi kwaye awufuni ukufudumeza.Endaweni yoko, ezi nkqubo zivelisa ii-electron ngokufaka intsimi yombane kwincam ebukhali yecathode, okukhokelela ekuphumeni kwe-electron ngenxa ye-quantum tunneling.Ekubeni i-cathode ayifudumezi, ixesha lokuphila ityhubhu ye-X-ray yandisiwe kakhulu, ibonelela ngeendleko ezinokuthi zigcinwe kwizibonelelo zonyango.
Ukongezelela, iinkqubo ezibandayo ze-X-ray cathode zinika ezinye iingenelo.Ziyakwazi ukuvulwa kwaye zivaliwe ngokukhawuleza, zivumela inkqubo ye-imaging esebenzayo.Iityhubhu ze-X-ray eziqhelekileyo zifuna ixesha lokufudumala emva kokutshintsha, ezinokudla ixesha kwiimeko ezingxamisekileyo.Ngenkqubo ye-cathode ebandayo, umfanekiso unokwenzeka ngokukhawuleza, unokugcina ixesha elixabisekileyo kwiimeko ezinzima zonyango.
Ukongezelela, ekubeni akukho ntambo evuthayo, akukho nkqubo yokupholisa efunekayo, ukunciphisa ubunzima kunye nobukhulu bezixhobo ze-X-ray.Oku kunokukhokelela ekuphuhlisweni kwezixhobo eziphathwayo kunye ne-compact imaging, ukwenza umfanekiso wezonyango ube lula kwaye ulungele ngakumbi kwiindawo ezahlukeneyo, kubandakanywa neendawo ezikude okanye amaziko onyango eselula.
Nangona kukho amandla amakhulu eenkqubo zeX-reyi ze-cathode ebandayo, kusekho imingeni efuna ukulungiswa.Iingcebiso zecathode ezikhutshwa yintsimi zibuthathaka, zonakaliswa lula, kwaye zifuna ukuphathwa ngononophelo nokugcinwa kwazo.Ukongeza, inkqubo ye-quantum tunneling inokuvelisa ii-electron zamandla aphantsi, ezinokubangela ingxolo yomfanekiso kunye nokunciphisa umgangatho wemifanekiso ye-X-ray.Nangona kunjalo, uphando oluqhubekayo kunye nokuqhubela phambili kwezobuchwepheshe kujolise ekoyiseni le mida kunye nokubonelela ngezisombululo zokuphunyezwa ngokubanzi kweenkqubo ze-X-ray ezibandayo.
Imakethi yokucinga yezonyango inokhuphiswano kakhulu kwaye ihlala ivela, kunye nenkqubela phambili yetekhnoloji eqhuba uphuculo kuxilongo kunye nonyango.Iinkqubo ze-X-reyi ze-cathode ezibandayo zinamandla okuphazamisa le marike kunye neenzuzo ezibalulekileyo ngaphezu kobuchwepheshe betyhubhu ye-X-ray.Ubomi obandisiweyo, ukutshintsha ngokukhawuleza kunye nobukhulu obuncitshisiweyo kunokuguqula ukucinga kwezonyango, ukuphucula ukhathalelo lwezigulane kunye nokwandisa ukusebenza kakuhle kwendawo yonke yezempilo.
Ukuqukumbela, iinkqubo ze-X-ray ze-cathode ezibandayo zibonisa ukutsha okuthembisayo kunokuphazamisa imarike yokucinga yonyango.Ngokutshintsha itekhnoloji yefilament eshushu yemveliImibhobho ye-X-ray, ezi nkqubo zinika ubomi obude, amandla okutshintsha ngokukhawuleza, kunye nezixhobo eziphathwayo ezingaphezulu.Nangona imingeni isaza kusonjululwa, uphando oluqhubekayo lujolise ekoyiseni le mida kunye nokwenza iinkqubo ezibandayo ze-X-ray ze-cathode zibe zisemgangathweni kwi-imaging yezokwelapha, ukuphucula ukunakekelwa kwesigulane kunye nokuguqula ishishini.
Ixesha lokuposa: Aug-25-2023