Rubidium-85 (⁸⁵Rb)
Halayen Atomic na zahiri
⁸⁵Rb yana da tsarin lantarki na ƙasa na [Kr]5s¹ kuma yana da babban tsarin atom hyperfine:
- Layin D₁ (794.6 nm)**: 5²S₁/₂→5²P₁/₂ sauyawa
- Layin D₂ (780.0 nm)**: 5²S₁/₂→5²P₃/₂ sauyawa
Mitar rabuwar hyperfine (3.035 GHz) ta yi ƙasa da kusan kashi 50% idan aka kwatanta da ta ⁸⁷Rb. Ana amfani da wannan bambancin sosai a fasahar sanyaya laser ta **isotope selective**.
Amfani da fasahar Quantum
1. Ilimin kimiyyar atom mai sanyi:
A matsayin isotope na fermion (nuclear spin half-integer), tsarin haɗin Bose-Fermi wanda ya ƙunshi ⁸⁵Rb da ⁸⁷Rb muhimmin dandamali ne don nazarin hulɗar iskar gas mai lalacewa ta kwantum.
Ana amfani da shi don kwaikwayon samfurin Hubbard a cikin gwaje-gwajen tweezers na gani.
2. Bayanin Kwatancen:
Ana iya amfani da yanayin rashin jin daɗin maganadisu na ⁸⁵Rb (m_F=0) a matsayin mai ɗaukar ajiyar yanayi mai jituwa, kuma lokacin decoherence na iya kaiwa daƙiƙa da yawa.
3. Daidaiton aunawa:
Yi amfani da canjin isotope na ⁸⁵Rb/⁸⁷Rb (1.2 GHz) don daidaita mizanin mitar laser.
Aikace-aikacen bincike na masana'antu da kimiyya
- Matatar atomic: Ana amfani da ɗakin tururin Rb don yin matatun gani masu faɗi (
- Binciken Isotope: Ingantaccen mahaɗan ⁸⁵Rb masu lakabi don nazarin aikin tashoshin ion na potassium a cikin halittu.
- Magnetic resonance na nukiliya: Ana amfani da ⁸⁵Rb NMR (mita 16.5 MHz a 2.35 T) don nazarin tsarin gida na mahaɗan rubidium.
Fasahar raba Isotope
Manyan hanyoyin samun tsarki mai ƙarfi ⁸⁵Rb daga rubidium na halitta sune:
1. Hanyar rabuwa da na'urar lantarki: rabuwar mass spectrometry (tsarki> 99.9%)
2. Hanyar raba laser: ta amfani da layin sha na musamman na ⁸⁵Rb (kamar 780.241 nm)
3. Hanyar musayar sinadarai: bisa ga tasirin raba isotope na hadaddun Rb crown ether
Tsaro da aiki
A matsayinsa na isotope mai karko, ⁸⁵Rb ba shi da haɗarin rediyoaktif, amma ana buƙatar sarrafa siffar ƙarfe bisa ga ƙa'idodin aminci na ƙarfen alkali (mai hana danshi da kuma hana wuta). Haɗaɗɗunsa ba su da guba sosai (LD₅₀>5 g/kg).
Kammalawa
⁸⁵Rb yana da ƙima ta musamman a cikin kwaikwayon kwantum, auna daidaito da fasahar spectroscopy saboda ƙarfin nukiliya mai ƙarfi da tsarin matakin kuzari mai yawa. A matsayin "abokin hulɗa mai ƙarfi" na ⁸⁷Rb, su biyun tare sun zama ginshiƙin fasaha na tsarin aikace-aikacen isotope na rubidium, kuma suna ci gaba da haɓaka ci gaban gaba na kimiyyar atom mai sanyi da fasahar kwantum.