Pregled bibliografske jedinice broj: 608313
Production of metastable 2 3S1 helium in a laser produced plasma at low pressures
Production of metastable 2 3S1 helium in a laser produced plasma at low pressures // Spectrochimica acta. Part B, Atomic spectroscopy, 81 (2013), 20-25 doi:10.1016/j.sab.2012.12.004 (međunarodna recenzija, članak, znanstveni)
CROSBI ID: 608313 Za ispravke kontaktirajte CROSBI podršku putem web obrasca
Naslov
Production of metastable 2 3S1 helium in a laser produced plasma at low pressures
Autori
Bišćan, Marijan ; Milošević, Slobodan
Izvornik
Spectrochimica acta. Part B, Atomic spectroscopy (0584-8547) 81
(2013);
20-25
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
helium metastable; helium excitation; laser produced plasma; cavity ringdown spectroscopy; laser ablation
Sažetak
We used cavity ringdown spectroscopy to study how the laser ablation of various materials (graphite, aluminium and iron) influences production of 23S1 metastable helium in the regime of low pressure helium gas. Plasma was produced by nanosecond Nd:YAG laser at 1064 nm with irradiance from 0.8 to 10.9 ×109 W/cm2. Helium pressure ranged from 0.03 to 0.2 mbar. It was found that at higher irradiances, metastable production for all materials reaches saturation due to plasma shielding and is more pronounced for graphite. The highest yield of metastables was found in the case of aluminium target (0.05%). For metals, production rate is discussed in terms of work function and ionization potential.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
POVEZANOST RADA
Projekti:
035-0352851-2856 - Laserska spektroskopija hladne plazme za obradu materijala (Milošević, Slobodan, MZOS ) ( CroRIS)
Ustanove:
Institut za fiziku, Zagreb
Citiraj ovu publikaciju:
Časopis indeksira:
- Current Contents Connect (CCC)
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
