Iinkqubo ze-X-ray ze-cathode ebandayo zinamandla okuguqula iteknoloji yeetyhubhu ze-X-ray, ngaloo ndlela ziphazamise imakethi yemifanekiso yezonyango. Iityhubhu ze-X-ray ziyinxalenye ebalulekileyo yezixhobo zemifanekiso yezonyango, ezisetyenziselwa ukuvelisa ii-x-ray ezifunekayo ukwenza imifanekiso yokuxilonga. Itekhnoloji yangoku ixhomekeke kwii-cathode ezishushu, kodwa iinkqubo ze-cold-cathode zimele utshintsho olunokwenzeka kweli candelo.
YemveliIityhubhu ze-X-ray isebenza ngokufudumeza i-filament ukuya kubushushu obuphezulu, ethi emva koko ikhuphe ii-electron. Ezi electron zikhawuleziswa ukuya kwindawo ekujoliswe kuyo, edla ngokwenziwa nge-tungsten, zivelise ii-X-ray xa zitshayiswa. Nangona kunjalo, le nkqubo ineengxaki ezininzi. Amaqondo obushushu aphezulu afunekayo ukuze kukhutshwe ii-electron anciphisa ubomi beetyhubhu, njengoko ukufudumeza nokupholisa rhoqo kubangela uxinzelelo lobushushu kunye nokuwohloka. Ukongeza, inkqubo yokufudumeza yenza kube nzima ukuvula nokucima ityhubhu ye-X-ray ngokukhawuleza, okwandisa ixesha elifunekayo kwinkqubo yokufota.
Ngokwahlukileyo koko, iinkqubo ze-X-ray ze-cathode ebandayo zisebenzisa umthombo we-electron yokukhupha intsimi kwaye azifuni kufudunyezwa. Endaweni yoko, ezi nkqubo zivelisa ii-electron ngokusebenzisa intsimi yombane kwincam ebukhali ye-cathode, nto leyo ebangela ukukhutshwa kwe-electron ngenxa ye-quantum tunneling. Ekubeni i-cathode ingafudunyezwa, ubomi betyhubhu ye-X-ray buyandiswa kakhulu, nto leyo ebonelela ngokonga iindleko ezinokubakho kwizibonelelo zonyango.
Ukongeza, iinkqubo ze-X-reyi ze-cathode ebandayo zibonelela ngezinye izibonelelo. Zinokuvulwa kwaye zivalwe ngokukhawuleza, okuvumela inkqubo yokufota esebenza kakuhle. Iityhubhu ze-X-reyi eziqhelekileyo zifuna ixesha lokufudumeza emva kokuvula, nto leyo enokuthatha ixesha kwiimeko ezingxamisekileyo. Ngenkqubo ye-cathode ebandayo, ukufota kunokwenzeka ngoko nangoko, okunokonga ixesha elibalulekileyo kwiimeko ezibalulekileyo zonyango.
Ukongeza, ekubeni kungekho filament eshushu, akukho nkqubo yokupholisa ifunekayo, nto leyo enciphisa ubunzima kunye nobukhulu bezixhobo ze-X-ray. Oku kunokukhokelela ekuphuhlisweni kwezixhobo zomfanekiso eziphathwayo nezincinci, okwenza ukuba umzobo wezonyango ube lula kwaye ube lula kwiindawo ezahlukeneyo, kuquka iindawo ezikude okanye izibonelelo zonyango ezihambayo.
Nangona kukho amandla amakhulu eenkqubo ze-X-ray ze-cathode ebandayo, kusekho imingeni ekufuneka ijongwe. Iincam ze-cathode ezikhupha umoya zibuthathaka, zonakala lula, kwaye zifuna ukuphathwa nokugcinwa ngononophelo. Ukongeza, inkqubo ye-quantum tunneling inokuvelisa ii-electron ezingenamandla aneleyo, ezinokubangela ingxolo yomfanekiso kwaye zinciphise umgangatho uwonke wemifanekiso ye-X-ray. Nangona kunjalo, uphando oluqhubekayo kunye nophuhliso lwetekhnoloji lujolise ekusoyiseni le mida kwaye lubonelele ngezisombululo zokusetyenziswa ngokubanzi kweenkqubo ze-X-ray ze-cold-cathode.
Imakethi yemifanekiso yezonyango inokhuphiswano olukhulu kwaye itshintsha rhoqo, kunye nophuhliso lwetekhnoloji oluqhuba uphuculo ekuxilongweni nasekunyangweni. Iinkqubo ze-X-ray ze-cathode ezibandayo zinamandla okuphazamisa le marike ngeenzuzo ezibalulekileyo kuneteknoloji yetyhubhu ye-X-ray yendabuko. Ubomi obude, ukutshintsha ngokukhawuleza kunye nobukhulu obuncitshisiweyo kunokutshintsha imifanekiso yezonyango, kuphucule ukhathalelo lwezigulane kwaye kwandise ukusebenza kakuhle kwendawo yokhathalelo lwempilo.
Ukuqukumbela, iinkqubo ze-X-reyi ze-cathode ezibandayo zimele ubuchule obutsha obuthembisayo obunokuphazamisa imakethi yemifanekiso yezonyango. Ngokutshintsha itekhnoloji ye-filament eshushu yemveliIityhubhu ze-X-ray, ezi nkqubo zibonelela ngobomi obude, amandla okutshintsha ngokukhawuleza, kunye namathuba ezixhobo eziphathwayo ngakumbi. Nangona imingeni isafuneka isonjululwe, uphando oluqhubekayo lujolise ekunqobeni le mida kunye nokwenza iinkqubo ze-X-ray ze-cathode ezibandayo zibe ngumgangatho kwimifanekiso yezonyango, ukuphucula ukhathalelo lwezigulane kunye nokuguqula ishishini.
Ixesha lokuthumela: Agasti-25-2023