Open AccessUV light-induced atom desorption for magnetic trap in single vacuum chamber
Author(s) -
Pengfei Zhang,
Xin Xu,
Haichao Zhang,
Shanyu Zhou,
Yuzhu Wang
Publication year - 2007
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.56.3205
Subject(s) - rubidium , desorption , atomic physics , materials science , trap (plumbing) , vacuum chamber , atom (system on chip) , partial pressure , phase (matter) , analytical chemistry (journal) , physics , chemistry , oxygen , potassium , organic chemistry , adsorption , chromatography , meteorology , computer science , composite material , embedded system , quantum mechanics , metallurgy
UV (390nm) light was used to modulate the rubidium partial pressure by inducing desorption of Rb atoms from the inner walls of the vacuum cell. A few mW/cm2 of UV light was enough to increase the rubidium partial pressure by a factor of 30 in about 1 s. After the source was turned off, the pressure quickly decayed back to its previous value with a time constant as short as 120 ms, allowing for long tapping lifetimes after the MOT holding phase. The number-lifetime product of the magnetic trap was shown as a function of the duration of the MOT holding phase, the maximum value was achieved after a MOT holding time of 1.25 s.