TY - JOUR
T1 - Experimental Determination of the 24Mg I (3s3p)3P2 Lifetime
AU - Jensen, Brian Bak
AU - He, Ming
AU - Westergaard, Philip Grabow
AU - Gunarsson, K.
AU - Madsen, Morten Hannibal
AU - Brusch, Anders
AU - Hald, J.
AU - Thomsen, Jan Westenkær
PY - 2011/9/7
Y1 - 2011/9/7
N2 - We present the first experimental determination of the electric-dipole forbidden (3s3p)P23→(3s2)S01 (M2) transition rate in Mg24 and compare to state-of-the-art theoretical predictions. Our measurement exploits a magnetic trap isolating the sample from perturbations and a magneto-optical trap as an amplifier converting each P23→S01 decay event into millions of photons readily detected. The transition rate is determined to be (4.87±0.3) ×10-4s-1 corresponding to a P23 lifetime of 2050-110+140 sec. This value is in agreement with recent theoretical predictions, and to our knowledge the longest lifetime ever determined in a laboratory environment.
AB - We present the first experimental determination of the electric-dipole forbidden (3s3p)P23→(3s2)S01 (M2) transition rate in Mg24 and compare to state-of-the-art theoretical predictions. Our measurement exploits a magnetic trap isolating the sample from perturbations and a magneto-optical trap as an amplifier converting each P23→S01 decay event into millions of photons readily detected. The transition rate is determined to be (4.87±0.3) ×10-4s-1 corresponding to a P23 lifetime of 2050-110+140 sec. This value is in agreement with recent theoretical predictions, and to our knowledge the longest lifetime ever determined in a laboratory environment.
U2 - 10.1103/physrevlett.107.113001
DO - 10.1103/physrevlett.107.113001
M3 - Journal article
C2 - 22026659
SN - 0031-9007
VL - 107
SP - 113001
JO - Physical Review Letters
JF - Physical Review Letters
IS - 11
ER -