The g factors of the 5/2<sub>1</sub><sup>+</sup> states in <sup>15</sup>O and <sup>15</sup>N
J Billowes; J Burde; J A G De Raedt; M A Grace; W R Kolbl; A Pakou; J Billowes; Nuclear Phys. Lab., Univ. of Oxford, Oxford, UK; J Burde; Nuclear Phys. Lab., Univ. of Oxford, Oxford, UK; J A G De Raedt; Nuclear Phys. Lab., Univ. of Oxford, Oxford, UK; M A Grace; Nuclear Phys. Lab., Univ. of Oxford, Oxford, UK; W R Kolbl; Nuclear Phys. Lab., Univ. of Oxford, Oxford, UK; A Pakou; Nuclear Phys. Lab., Univ. of Oxford, Oxford, UK
Журнал:
Journal of Physics G: Nuclear Physics
Дата:
1983-11-01
Аннотация:
The sign of the g factor of the 5.241 MeV 5/2<sup>+</sup> state in <sup>15</sup>O has been determined in an integral transient field measurement in thick iron using the <sup>3</sup>He(<sup>16</sup>O, alpha )<sup>15</sup>O reaction. After correcting for beam bending the measured rotation was -2.33(85) mrad and a positive moment is assigned to this state. The g factor of the mirror 5.270 MeV 5/2<sup>+</sup> state in <sup>15</sup>N has been measured by observing the hyperfine modulation of the gamma -ray anisotropy in hydrogen like ions recoiling in vacuum following the <sup>1</sup>H(<sup>18</sup>O, alpha )<sup>15</sup>N reaction. From the measured spatial frequency the g factor was deduced to be mod g mod =0.94(7). A simultaneous lifetime determination for this state gave a value tau =2.49(24) ps. Combination of these results with previous measurements establishes a value for the isoscalar g factor of g<sub>0</sub>=+0.60(4).
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