Exotic nuclear shape due to cluster formation at high angular momentum

2020 ◽  
Vol 102 (3) ◽  
Author(s):  
Balaram Dey ◽  
Shan-Shan Wang ◽  
Deepak Pandit ◽  
Srijit Bhattacharya ◽  
Xi-Guang Cao ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Cluster Formation ◽  
Nuclear Shape ◽  
High Angular Momentum

First evidence for the hyperdeformed nuclear shape at high angular momentum

1993 ◽  
Vol 71 (2) ◽  
pp. 231-234 ◽  
Author(s):  
A. Galindo-Uribarri ◽  
H. R. Andrews ◽  
G. C. Ball ◽  
T. E. Drake ◽  
V. P. Janzen ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Nuclear Shape ◽  
High Angular Momentum

scholarly journals Effects of initial density profiles on massive star cluster formation in giant molecular clouds

2021 ◽  
Author(s):  
Yingtian Chen ◽  
Hui Li ◽  
Mark Vogelsberger
Keyword(s):  
Angular Momentum ◽  
Star Formation ◽  
Molecular Clouds ◽  
Globular Clusters ◽  
Cluster Formation ◽  
Initial Density ◽  
Giant Molecular Clouds ◽  
Density Profiles ◽  
Stellar Feedback ◽  
Gas Accretion

Abstract We perform a suite of hydrodynamic simulations to investigate how initial density profiles of giant molecular clouds (GMCs) affect their subsequent evolution. We find that the star formation duration and integrated star formation efficiency of the whole clouds are not sensitive to the choice of different profiles but are mainly controlled by the interplay between gravitational collapse and stellar feedback. Despite this similarity, GMCs with different profiles show dramatically different modes of star formation. For shallower profiles, GMCs first fragment into many self-gravitation cores and form sub-clusters that distributed throughout the entire clouds. These sub-clusters are later assembled ‘hierarchically’ to central clusters. In contrast, for steeper profiles, a massive cluster is quickly formed at the center of the cloud and then gradually grows its mass via gas accretion. Consequently, central clusters that emerged from clouds with shallower profiles are less massive and show less rotation than those with the steeper profiles. This is because 1) a significant fraction of mass and angular momentum in shallower profiles is stored in the orbital motion of the sub-clusters that are not able to merge into the central clusters 2) frequent hierarchical mergers in the shallower profiles lead to further losses of mass and angular momentum via violent relaxation and tidal disruption. Encouragingly, the degree of cluster rotations in steeper profiles is consistent with recent observations of young and intermediate-age clusters. We speculate that rotating globular clusters are likely formed via an ‘accretion’ mode from centrally-concentrated clouds in the early Universe.

Single particle nature of the yrast line at high angular momentum in 152Dy

1979 ◽  
Vol 84 (2) ◽  
pp. 178-181 ◽  
Author(s):  
B. Haas ◽  
H.R. Andrews ◽  
O. Häusser ◽  
D. Horn ◽  
J.F. Sharpey-Schafer ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Single Particle ◽  
High Angular Momentum ◽  
Yrast Line ◽  
Particle Nature

High-Angular-Momentum States in Cold Rydberg Gases

2001 ◽  
Vol 86 (18) ◽  
pp. 3993-3996 ◽  
Author(s):  
S. K. Dutta ◽  
D. Feldbaum ◽  
A. Walz-Flannigan ◽  
J. R. Guest ◽  
G. Raithel
Keyword(s):  
Angular Momentum ◽  
High Angular Momentum

Persistence of octupole bands to high angular momentum in theA=80region

1989 ◽  
Vol 39 (3) ◽  
pp. 1158-1161 ◽  
Author(s):  
P. D. Cottle ◽  
O. N. Bignall
Keyword(s):  
Angular Momentum ◽  
High Angular Momentum

scholarly journals Fission cross sections as a probe of fusion dynamics at high angular momentum

2018 ◽  
Vol 98 (4) ◽  
Author(s):  
C. S. Palshetkar ◽  
D. J. Hinde ◽  
M. Dasgupta ◽  
E. Williams ◽  
K. Ramachandran ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Cross Sections ◽  
High Angular Momentum

On Positive Parity Levels of High Angular Momentum in69,71,73Ge

1974 ◽  
Vol 10 (1-2) ◽  
pp. 51-64 ◽  
Author(s):  
K Forssten ◽  
A Hasselgren ◽  
Ph Monseu ◽  
A Nilsson ◽  
Z P Sawa
Keyword(s):  
Angular Momentum ◽  
Positive Parity ◽  
High Angular Momentum

scholarly journals Effects of High Angular Momentum on the Unimolecular Dissociation of CD2CD2OH: Theory and Comparisons with Experiment

2013 ◽  
Vol 117 (42) ◽  
pp. 10951-10963 ◽  
Author(s):  
Benjamin G. McKown ◽  
Michele Ceriotti ◽  
Caroline C. Womack ◽  
Eugene Kamarchik ◽  
Laurie J. Butler ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Unimolecular Dissociation ◽  
High Angular Momentum
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