TY - JOUR
T1 - Atomic-beam measurement of isotope shifts in the D1 line of Cs127, Cs129, Cs133, Cs134m, Cs134, and Cs137
AU - Marrus, Richard
AU - Wang, Edmond C.
AU - Yellin, Joseph
PY - 1969
Y1 - 1969
N2 - The atomic-beam method has been applied to the measurement of isotope shifts in the D1 line of five radioactive isotopes including the isomeric pair Cs134-Cs134m. The shifts in these lines, relative to the energy in the D1 line of Cs133 are as follows: Cs127, +5.9(1.5) mK; Cs129, +2.8(1.5) mK; Cs134, +1.8(1.0) mK; Cs134m, -2.2(1.2) mK; and Cs137, -6.0(1.5) mK. Here a positive sign means that the frequency of the D1 line for the indicated isotope is greater than that for Cs133. Evidence is presented which indicates that the observed shifts arise almost completely from nuclear effects. These shifts must therefore be compared with a calculated shift arising from the normal volume effect of 10 mK/neutron.
AB - The atomic-beam method has been applied to the measurement of isotope shifts in the D1 line of five radioactive isotopes including the isomeric pair Cs134-Cs134m. The shifts in these lines, relative to the energy in the D1 line of Cs133 are as follows: Cs127, +5.9(1.5) mK; Cs129, +2.8(1.5) mK; Cs134, +1.8(1.0) mK; Cs134m, -2.2(1.2) mK; and Cs137, -6.0(1.5) mK. Here a positive sign means that the frequency of the D1 line for the indicated isotope is greater than that for Cs133. Evidence is presented which indicates that the observed shifts arise almost completely from nuclear effects. These shifts must therefore be compared with a calculated shift arising from the normal volume effect of 10 mK/neutron.
UR - http://www.scopus.com/inward/record.url?scp=0004794062&partnerID=8YFLogxK
U2 - 10.1103/PhysRev.177.122
DO - 10.1103/PhysRev.177.122
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AN - SCOPUS:0004794062
SN - 0031-899X
VL - 177
SP - 122
EP - 126
JO - Physical Review
JF - Physical Review
IS - 1
ER -