Production and investigation of tungstenαemitters including the new isotopes,W165and

K. S. Toth

¹

,

W. D. Schmidt-Ott²,

C. R. Bingham

³

et al.

Copper ion induced reactions on110-108-106Cd,109-107Ag and110Pd. new rhenium, osmium and iridium isotopes

“…This e energy is however slightly different from the values given by other authors in [9] (E~ =5.153 MeV) and [10] (E~=5.146 MeV). There is no conclusion concerning this a-decay.…”

“…The low energy part of this 5.26 MeV curve can be attributed to a two particle emission. The only possibility is a (Cu, p n) reaction giving 168Re since a68W produced by the l~ 2p) reaction is not an a emitter and ~65W produced by l~ an) decays by a 4.91 MeV eray [10]. The ~~ ep) reaction would produce 165Ta but in this case the e decay energy would be still smaller.…”

Revision of the decay data of166?170Re, including new isomers167m,169mRe

“…The earlier reported e-line of 5.372MeV of ~6VRe Ell, 12] and of 5.136MeV of 16SRe [12] were later ascribed to 166Re, and 167Re, respectively [9]. A further complication arises from the fact that the tungsten isotopes 163-~65 W are known to have similar e-ray energies of 5.384, 5.148, and 4:902 MeV [13,14] and half-lives being close to those reported for the rhenium isotopes. Therefore, we performed a careful investigation of this region.…”

Rapid Communication: First Observation of y-Ray Emission Assigned to the Decay of 164W

“…From this it follows that the tungsten isotopes 164 W (T i/2 = 6.4 s ± 0.8 s) and 165 W (T u2 = 5.1 s ±0.5 s) [4,5] are best suited as model nuclei. Unfortunately, only few data on these two exotic nuclei are available from the literature.…”

“…Unfortunately, only few data on these two exotic nuclei are available from the literature. Eastham et al [3] W were first produced by Toth et al [4] in the reaction ,56 Dy ( 16 0, xn). Additional data on 16°-,66 w reported in [5,6] were confirmed by these authors.…”