Ilo iftiin ultraviolet xad-dhaaf ah oo dib-u-soo-noqosho sare leh

Ilo iftiin ultraviolet xad-dhaaf ah oo dib-u-soo-noqosho sare leh

Farsamooyinka ka dib cadaadiska oo ay weheliso goobo laba-midab leh ayaa soo saara ilo iftiin ultraviolet ah oo aad u qulqulaya
Codsiyada Tr-ARPES, yaraynta hirarka iftiinka wadista iyo kordhinta suurtagalnimada ionization gaaska ayaa ah habab wax ku ool ah oo lagu helo qulqul sare iyo iswaafajin heer sare ah. Inta lagu guda jiro soo saarista iswaafajin heer sare ah oo leh soo noqnoqosho heer sare ah oo hal mar ah, habka labanlaabka soo noqnoqda ama labanlaabka saddex-laabka ah ayaa asal ahaan la qaataa si loo kordhiyo waxtarka wax soo saarka ee iswaafajinta heerka sare ah. Iyada oo la kaashanayo cadaadiska garaaca wadnaha ka dib, way fududahay in la gaaro cufnaanta awoodda ugu sarreysa ee loo baahan yahay soo saarista iswaafajinta heerka sare ah iyadoo la adeegsanayo iftiin garaaca wadnaha oo gaaban, si hufnaanta wax soo saarka loo helo marka loo eego kan waditaanka garaaca wadnaha oo dheer.

Hal-ku-dhegeeyaha laba-jibbaaran wuxuu gaaraa magdhowga qalooca hore ee garaaca wadnaha
Isticmaalka hal curiye oo kala-duwan oo ku jira monochromator wuxuu keenayaa isbeddel ku yimaadaindhahaJid toosan oo ku yaal fallaadhaha garaaca wadnaha ee aadka u gaaban, oo sidoo kale loo yaqaan u janjeera garaaca hore, taasoo keenta fidinta waqtiga. Farqiga waqtiga guud ee booska kala-baxa oo leh hirarka kala-baxa λ ee nidaamka kala-baxa m waa Nmλ, halkaas oo N ay tahay tirada guud ee khadadka laydhka ee iftiimaya. Marka lagu daro curiye kala-baxa labaad, hore ee garaaca wadnaha ee janjeera ayaa la soo celin karaa, waxaana la heli karaa monochromator oo leh magdhow dib-u-dhac waqti. Iyadoo la hagaajinayo waddada indhaha ee u dhaxaysa labada qaybood ee monochromator, qaabeeyaha garaaca shabagga ayaa loo habeyn karaa si sax ah loogu magdhabo kala-baxa ku jira ee shucaaca isku-dhafka sare. Iyadoo la adeegsanayo naqshad magdhow dib-u-dhac waqti, Lucchini et al. waxay muujiyeen suurtagalnimada abuurista iyo sifeynta garaaca ultraviolet-ka xad-dhaafka ah ee monochromatic-ga ah ee aadka u gaaban oo leh ballaca garaaca oo ah 5 fs.
Kooxda cilmi-baarista Csizmadia ee Xarunta ELE-Alps ee Xarunta Iftiinka Ba'an ee Yurub waxay gaareen isbeddelka spectrum iyo garaaca wadnaha ee iftiinka ultraviolet-ka aadka u daran iyagoo adeegsanaya monochromator magdhow labanlaab ah oo dib-u-dhac waqti-gaaban ah oo ku jira soo noqnoqoshada sare ee soo noqnoqda, khadka iftiinka harmonic-ka ee heerka sare ah. Waxay soo saareen harmonics-ka heerka sare ah iyagoo isticmaalaya darawallaysariyadoo leh heer ku celcelin ah oo ah 100 kHz waxayna gaartay ballaca garaaca ultraviolet-ka ee aadka u daran oo ah 4 fs. Shaqadani waxay furaysaa fursado cusub oo loogu talagalay tijaabooyinka waqtiga lagu xalliyay ee lagu ogaanayo goobta ee xarunta ELI-ALPS.

Ilo iftiin ultraviolet xad dhaaf ah oo soo noqnoqda oo soo noqnoqda ayaa si weyn loogu isticmaalay daraasadda dhaqdhaqaaqa elektaroonigga ah, waxayna muujisay rajo ballaaran oo ku saabsan adeegsiga attosecond spectroscopy iyo sawir-qaadista mikroskoobka. Iyadoo la raacayo horumarka joogtada ah iyo hal-abuurka sayniska iyo tignoolajiyada, soo noqnoqoshada sare ee soo noqnoqoshada sare ee ultraviolet xad dhaaf ahilo iftiinwaxay u socotaa jihada soo noqnoqoshada sare ee ku celcelinta, qulqulka sawirka sare, tamarta sawirka sare iyo ballaca garaaca gaaban. Mustaqbalka, cilmi-baarista sii socota ee ku saabsan soo noqnoqoshada sare ee ilaha iftiinka ultraviolet-ka daran waxay sii horumarin doontaa codsigooda dhaqdhaqaaqa elektaroonigga ah iyo meelaha kale ee cilmi-baarista. Isla mar ahaantaana, hagaajinta iyo xakamaynta tignoolajiyada soo noqnoqoshada sare ee isha iftiinka ultraviolet-ka daran iyo codsigeeda farsamooyinka tijaabada sida sawir-qaadista sawir-qaadista sawir-qaadista ee xallinta xagasha ayaa sidoo kale noqon doonta diiradda cilmi-baarista mustaqbalka. Intaa waxaa dheer, tignoolajiyada nuugista ku-meel-gaarka ah ee attosecond ee waqtiga-xallinta iyo tignoolajiyada sawir-qaadista mikroskoobka waqtiga-dhabta ah ee ku salaysan soo noqnoqoshada sare ee isha iftiinka ultraviolet-ka daran ayaa sidoo kale la filayaa in si dheeraad ah loo barto, loo horumariyo oo loo dabaqo si loo gaaro sawir-qaadista waqtiga-xallinta sare ee attosecond iyo sawir-qaadista nanospace-ka ee mustaqbalka.