Coulomb excitation study of<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mmultiscripts><mml:mrow><mml:mi mathvariant="normal">U</mml:mi></mml:mrow><mml:mprescripts /><mml:mrow /><mml:mrow><mml:mn>235</mml:mn></mml:mrow><mml:mrow /><mml:mrow /></mml:mmultiscripts></mml:mrow></mml:math>: Assessment of theoretical quasiparticle states

Bettencourt, J. de; Briançon, Ch.; Libert, J.; Thibaud, J. P.; Walen, R.J.; Gizon, A.; Meyer, M.; Quentin, P.

doi:10.1103/physrevc.34.1706

Cited by 6 publications

(13 citation statements)

References 25 publications

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“…24). The present energies for the 11/2 + , 13/2 + , and 15/2 + transitions differ from those of de Bettencourt et al [6] to an extent that suggests that these authors assigned the wrong peaks to this band. The characteristic decay pattern of the [624]7/2 band allowed us to identify several transitions in the CHICO-γ -γ matrix which feed into the [624]7/2 band at specific levels, thereby defining the excitation energies of the new states (cf.…”

Section: The [624]7/2 Bandcontrasting

confidence: 91%

“…To spin 13/2 + the state energies were taken from the compilation [4]. For spin 15/2 + we agree with the previous assignment to better than 1 keV, but the states of spin 17/2 + through 23/2 + assigned by de Bettencourt et al [6] are very different from ours and we believe their values to be in error. The discrepancies are so large that the previous authors must have assigned the wrong γ -ray peaks to this band.…”

Section: The [631]1/2 Bandsupporting

confidence: 83%

“…20. Beginning at spin 17/2, and above, we note serious discrepancies with the results of de Bettencourt et al [6] (e.g., 10 keV at spin 17/2), which suggests that these authors have assigned the wrong transitions to this band. Above spin 23/2, the assignments in the present work are new.…”

Section: The K = 3/2 − γ -Vibration Bandcontrasting

confidence: 81%

“…The even-signature states 17/2 + , 21/2 + , and 25/2 + assigned by de Bettencourt et al [6] were not seen in this experiment. The odd-signature transitions, spin 19/2 + and 23/2 + , assigned in de Bettencourt et al [6] differ by more than 10 keV from our own assignments, and we believe that these authors assigned the wrong transitions to these decays. States of spin 27/2 + and above are new assignments in the present work.…”

Section: The [631]3/2 Bandcontrasting

confidence: 49%

“…The state energies to spin 11/2 + are taken from the compilation [4]. Our assignments differ from those of de Bettencourt et al [6] by ≈2 keV at spin 15/2 and by ≈5 keV at spin 19/2 and we assume that the wrong transitions were assigned in their work. Above spin 23/2 + , the present assignments are new.…”

Section: The [622]5/2 Bandmentioning

confidence: 83%

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Band structure of235U

et al. 2012

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Over a period of several years we have performed three separate experiments at Lawrence Berkeley National Laboratory's 88-Inch Cyclotron in which 235 U (thick target) was Coulomb-excited. The program involved standalone experiments with Gammmasphere and with the 8pi Spectrometer using 136 Xe beams at 720 MeV, and a CHICO-Gammasphere experiment with a 40 Ca beam at 184 MeV. In addition to extending the known negativeparity bands to high spin, we have assigned levels in some seven positive-parity bands which are in some cases (e.g., [631]1/2, [624]7/2, and [622]5/2) strongly populated by E3 excitation. The CHICO data have been analyzed to extract E2 and E3 matrix elements from the observed yields. Additionally, many M1 matrix elements could be extracted from the γ-ray branching ratios. A number of new features have emerged, including the unexpected attenuation of magnetic transitions between states of the same Nilsson multiplet, the breakdown of Coriolis staggering at high spin, and the effect of E3 collectivity on Coriolis interactions.

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Section: The [624]7/2 Bandcontrasting

confidence: 91%

Section: The [631]1/2 Bandsupporting

confidence: 83%

Section: The K = 3/2 − γ -Vibration Bandcontrasting

confidence: 81%

Section: The [631]3/2 Bandcontrasting

confidence: 49%

Section: The [622]5/2 Bandmentioning

confidence: 83%

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Band structure of235U

et al. 2012

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Nuclear Data Sheets for A = 235

Browne

Tuli

2014

Nuclear Data Sheets

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A b s t r a c t : S p e c t r o s c o p i c d a t a a n d l e v e l s c h e m e s f r o m r a d i o a c t i v e d e c a y a n d n u c l e a r r e a c t i o n s t u d i e s a r e presented here for all nuclei with mass number A=235. The highlight of this evaluation consists of the precise and comprehensive Coulomb excitation study (2012Wa35) on 2 3 5 U , w h i c h i n a d d i t i o n t o t h e 7 / 2 [ 7 4 3 ] g r o u n d s t a t e r o t a t i o n a l b a n d , e x t e n d e d t h e 1 / 2 [ 6 3 1 ] , 5 / 2 [ 6 2 2 ] , 5/2[752], and 3/2[631] rotational bands up to Jπ =53/2+, 49/2+, 41/2-, and 43/2+, respectively. This evaluation presents a study (2010Hu02) of the 2 3 7 Np( 1 1 6 Sn, 1 1 8 Snγ ) reaction where the ground state rotational band 5/2[642] was observed up to Jπ =(53/2+). I t i s w o r t h f o r h i s t o r i c a l k n o w l e d g e t o m e n t i o n t h e r e p o r t o n t h e " D i s c o v e r y o f i s o t o p e s o f t h e t r a n s u r a n i u m elements with 93<= Z <=98 " (2013Fr02), where the information for elements Np, Pu, and Am with mass number A= 235 is given. 235 Cf has not been observed.

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Alignments in the odd-proton actinidesNp237andAm241
Saleem
¹
,
Janssens
²
,
Carpenter
³

et al. 2004
Phys. Rev. C
35
0
4
0
View full text Add to dashboard Cite

Coulomb excitation study ofU235: Assessment of theoretical quasiparticle states

Cited by 6 publications

References 25 publications

Band structure of235U

Band structure of235U

Nuclear Data Sheets for A = 235

Alignments in the odd-proton actinidesNp237andAm241
Saleem
¹
,
Janssens
²
,
Carpenter
³

et al. 2004
Phys. Rev. C
35
0
4
0
View full text Add to dashboard Cite

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Coulomb excitation study ofU235: Assessment of theoretical quasiparticle states

Cited by 6 publications

References 25 publications

Band structure of235U

Band structure of235U

Nuclear Data Sheets for A = 235

Alignments in the odd-proton actinidesNp237andAm241Saleem1, Janssens2, Carpenter3 et al. 2004Phys. Rev. C35040View full textAdd to dashboardCite

Contact Info

Product

Resources

About

Alignments in the odd-proton actinidesNp237andAm241
Saleem
¹
,
Janssens
²
,
Carpenter
³

et al. 2004
Phys. Rev. C
35
0
4
0
View full text Add to dashboard Cite