Cross section coherence energy and interaction time in heavy ion dissipative collisions

1989 ◽  
Vol 332 (2) ◽  
pp. 195-201 ◽  
Author(s):  
G. Cardella ◽  
M. Papa ◽  
G. Pappalardo ◽  
F. Rizzo ◽  
A. Rosa ◽  
...  
Keyword(s):  
Cross Section ◽  
Heavy Ion ◽  
Interaction Time ◽  
Coherence Energy

IMPORTANCE OF DEFORMATION AND ORIENTATION OF NUCLEAR SHAPES FOR THE SYNTHESIS OF SUPER-HEAVY ELEMENTS

2004 ◽  
Vol 13 (01) ◽  
pp. 361-366 ◽  
Author(s):  
M. KOWAL ◽  
Z. ŁOJEWSKI
Keyword(s):  
Potential Energy ◽  
Cross Section ◽  
Heavy Ion Collisions ◽  
Fusion Cross Section ◽  
Heavy Ion ◽  
Heavy Elements ◽  
Axially Symmetric ◽  
Deformation Degree ◽  
Fusion Barrier ◽  
Ion Collisions

We are studying the potential energy describing the entrance channel of a heavy-ion collisions for the axially symmetric deformed and arbitrarily oriented nuclear shapes. The paper presents an analysis of the influence of different orientations of the deformed ions on the height and shape of the fusion barrier. The net effect of the deformation degree of freedom on the transmission at sub-barrier energies is to enhance the fusion cross section. This problem is very important especially in the perspective of the synthesis of super-heavy elements.

The interaction time for heavy-ion fusion

1986 ◽  
Vol 92 (2) ◽  
pp. 210-216 ◽  
Author(s):  
A. Scalia
Keyword(s):  
Heavy Ion ◽  
Interaction Time ◽  
Heavy Ion Fusion

Using Subthreshold Heavy Ion Upset Cross Section to Calculate Proton Sensitivity

2007 ◽  
Vol 54 (6) ◽  
pp. 2394-2399 ◽  
Author(s):  
Christophe Inguimbert ◽  
Sophie Duzellier ◽  
Thierry Nuns ◽  
FranÇoise Bezerra
Keyword(s):  
Cross Section ◽  
Heavy Ion

THE INTERACTION OF ρ AND K+ MESONS WITH MATTER

2010 ◽  
Vol 19 (08n10) ◽  
pp. 1609-1618
Author(s):  
J. AICHELIN ◽  
C. HARTNACK ◽  
Y. LEIFELS ◽  
H. OESCHLER ◽  
S. VOGEL
Keyword(s):  
Cross Section ◽  
Charge Exchange ◽  
Production Cross Section ◽  
Production Cross ◽  
Heavy Ion ◽  
Potential Interaction ◽  
Heavy Ion Experiments ◽  
Vector Mesons ◽  
Kaon Production ◽  
K Mesons

We review in this contribution the information we can obtain from heavy-ion experiments about the interaction of mesons with matter. We demonstrate that the vector mesons seen in experiments come predominantly from low densities. Kaons offer a better opportunity but most of the presently available experimental observables do not allow to analyze separately the three essential unknown quantities: the kaon production cross-section in the medium, the K+N potential interaction at finite densities and temperatures and the kaon (elastic or charge exchange) rescattering cross-section in the medium. We propose a measurement which almost exclusively tests the K+N potential.

scholarly journals Measurement of Open Heavy-Flavour Production in pp and p–Pb Collisions with ALICE at the LHC

2018 ◽  
Vol 46 ◽  
pp. 1860019
Author(s):  
Renu Bala
Keyword(s):  
Cross Section ◽  
Production Cross Section ◽  
Heavy Ion Collisions ◽  
D Mesons ◽  
Production Cross ◽  
Hadron Collider ◽  
Heavy Ion ◽  
Nuclear Modification Factor ◽  
Ion Collisions ◽  
Modification Factor

The Large Hadron Collider at CERN allows us to study heavy-ion collisions at an un- precedented energy. ALICE, A Large Ion Collider Experiment, is the experiment ded- icated to the investigation of heavy-ion collisions. In this contribution, recent open heavy-flavour results from pp collisions at [Formula: see text]= 5.02, 7, 8 and 13 TeV and p–Pb collisions at [Formula: see text] = 5.02 TeV, collected with the ALICE detector during the LHC Run-1 and Run-2 are presented. The results include the production cross section, nuclear modification factor and multiplicity dependence studies of production of D mesons and electrons from heavy-flavour hadron decays at mid-rapidity and of muons from heavy-flavour hadron decays at forward rapidity. Charm production was measured down to [Formula: see text] = 0 GeV/[Formula: see text] in pp and p–Pb collisions. Recent measurements of the production cross section of heavy charmed baryons such as [Formula: see text] (in pp and p–Pb) and [Formula: see text] (in pp) are discussed. The results are compared with theoretical model predictions.

scholarly journals Production of exotic charmonium in heavy ion collisions

2020 ◽  
Vol 235 ◽  
pp. 02005
Author(s):  
F. S. Navarra
Keyword(s):  
Gas Phase ◽  
Cross Section ◽  
Heavy Ion Collisions ◽  
Production Cross ◽  
Short Review ◽  
Heavy Ion ◽  
Charmonium Production ◽  
Ion Collisions ◽  
Hadron Gas ◽  
Multiquark States

We present a short review of exotic charmonium production in heavy ion collisions. We discuss predictions for the production cross section of several of these states in ultra-peripheral Pb-Pb collisions at the LHC. The experimental study of these processes is feasible and can be used to yield valuable information about the structure of multiquark states. We also address X(3872) production in central Pb-Pb collisions. In particular, we discuss the suppression of X(3872) during the hadron gas phase. Finally, we comment on the very recent CMS data on the X(3872) yield in Pb-Pb collisions. the very recent CMS data on the X(3872) yield in Pb-Pb collisions.

Effects of level density parameter on the superheavy production in cold fusion

2014 ◽  
Vol 29 (40) ◽  
pp. 1450214 ◽  
Author(s):  
M. R. Pahlavani ◽  
S. A. Alavi
Keyword(s):  
Cross Section ◽  
Neutron Emission ◽  
Level Density ◽  
Cold Fusion ◽  
Heavy Ion ◽  
Evaporation Residue ◽  
Density Parameter ◽  
Fusion Reactions ◽  
Level Density Parameter ◽  
Evaporation Residue Cross Section

By using semiclassical method and considering Woods–Saxon and Coulomb potentials, the level density parameter a was calculated for three superheavy nuclei 270110, 278112 and 290116. Obtained results showed that the value of level density parameter of these nuclei is near to the simple relation a ≈ A/10. In framework of the dinuclear system model, the effects of level density parameter on the probability of the formation of a compound nucleus, the ratio of neutron emission width and fission width, and evaporation residue cross-section of three cold fusion reactions 62 Ni +208 Pb , 70 Zn +208 Pb and 82 Se +208 Pb , leading to superheavy elements were investigated. The findings indicate that the level density parameter play a significant role in calculations of heavy-ion fusion–fission reactions. The obtained results in the case of a = A/12 have larger values in comparison with calculated level density parameter with Woods–Saxon potential (a WS ) and a = A/10. The theoretical results of the evaporation residue cross-section are very sensitive to the choice of level density parameter. The calculated values with a WS are in good agreement with experimental values.

Sign in / Sign up

Export Citation Format

Share Document