Search for nuclear-structure effects in proton evaporation spectra

Blumenthal, D. J.; Lister, C. J.; Chowdhury, P.; Crowell, B.; Ennis, P. J.; Winter, C.; Drake, T.E.; Galindo-Uribarri, A.; Zwartz, G.; Andrews, H.R.; Ball, G. C.; Radford, D. C.; Ward, D. R.; Janzen, V. P.

doi:10.1103/physrevlett.66.3121

Cited by 12 publications

(6 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…9(b), is that for a given number of emitted particles the average proton energy is shifted toward lower values when one selects higher fold (i.e., higher angular momentum) windows, a fact which is explained by the decrease of the available excitation energy above the yrast line. This trend is well reproduced by the calculations and is in agreement with the angular-momentum dependence of the proton spectra already evidenced in earlier investigations [12,13]. After observing the strong dependence of the proton ip4.…”

Section: The 30 Kev B Idgesupporting

confidence: 92%

“…In the A 80 mass region diferent experiments gave contrasting results in this respect. Large energy shifts and changes in the shape of proton spectra, obtained setting gates on di8'erent rotational bands, were reported in [12] for nucleus Sr, while no evidence for structural effects on the proton spectra was found in [13] for the Sr and Zr nuclei.…”

Section: Proton Spectra From the Large Area Telescopementioning

confidence: 93%

See 1 more Smart Citation

Population of hyperdeformed structures inDy152from proton-gamma coincidence experiments

et al. 1995

View full text Add to dashboard Cite

The ridge structure with AE~= +30 keV, recently observed in the reaction 187 MeV Cl+ Sn and attributed to a hyperdeformed nuclear shape, has been con6rmed in a new proton-p coincidence experiment and assigned to the Dy nucleus. Estimates of the cross section for the population of the 30 keV ridge and for the associated entry states have been obtained. The proton spectra in coincidence with p rays of diferent Dy isotopes show e8'ects related to the exit channel and to the angular momentum but they are scarcely sensitive to the selection of different shapes (oblate, normal deformed prolate, superdeformed) in the same residual nucleus Dy. The energy of the protons in coincidence with the AE~= +30 keV ridge is however larger than expected. This eKect is discussed in the framework of the fission-evaporation competition. PACS number(s): 27.70. +q, 21.10.Re, 25.70.Gh 157

show abstract

Section: The 30 Kev B Idgesupporting

confidence: 92%

Section: Proton Spectra From the Large Area Telescopementioning

confidence: 93%

Population of hyperdeformed structures inDy152from proton-gamma coincidence experiments

et al. 1995

View full text Add to dashboard Cite

show abstract

“…The present work and related studies [7,12,13] demonstrate the importance of high efficiency detector arrays for this kind of work. It is essential that the final state be characterized as completely as possible with high statistical precision.…”

Section: Discussionsupporting

confidence: 60%

Origin of correlations between evaporation protons and discrete γ rays in heavy-ion fusion-evaporation reactions

et al. 1994

View full text Add to dashboard Cite

We have investigated correlations between evaporated protons and discrete p rays in the heavyion fusion-evaporation reactions Ni( Al, jp) Sr and Ni( Si,4p) Sr. Sp-y and 4p-p coincidences were measured using a 4m charged-particle detector array. The events studied were completely reconstructed kinematically in order to determine the excitation energy of formation of Sr. Correlations arising from well-understood kinematic effects were measured and found to be well reproduced by predictions made by the statistical-model evaporation code PACE2. Dynamical correlations due to nuclear structure effects were searched for by measuring proton spectra in coincidence with discrete p rays from four rotational bands in Sr. Contrary to published results, no significant shifts of the first moment of the spectra were observed.PACS number(s): 25.70. Gh, 24.60.Dr, 27.50.+e

show abstract

“…According to Grover and Gilat [5] the particles emitted from cool nuclei would be affected by nuclear structure and this should alter the measured particle spectra. Blumenthal et al [6] tried to look for possible influence of nuclear structure in the reaction Ni ( ¾ Si, ÜÔ ÝÒ Þ) from measurement of proton spectra through the reaction channels leading to ¼ ½ ¿ Sr, Zr and ¿ Y. They observed differnces in the shapes of particle spectra.…”

Section: Nuclear Structure Effects From Particle Spectramentioning

confidence: 97%

Light charged particle emission in heavy-ion reactions — What have we learnt?

Kailas

2001

Pramana - J Phys

View full text Add to dashboard Cite

Light charged particles emitted in heavy-ion induced reactions, their spectra and angular distributions measured over a range of energies, carry the signature of the underlying reaction mechanisms. Analysis of data of light charged particles, both inclusive and exclusive measured in coincidence with gamma rays, fission products, evaporation residues have yielded interesting results which bring out the influence of nuclear structure, nuclear mean field and dynamics on the emission of these particles.

show abstract

Search for nuclear-structure effects in proton evaporation spectra

Cited by 12 publications

References 7 publications

Population of hyperdeformed structures inDy152from proton-gamma coincidence experiments

Population of hyperdeformed structures inDy152from proton-gamma coincidence experiments

Origin of correlations between evaporation protons and discrete γ rays in heavy-ion fusion-evaporation reactions

Light charged particle emission in heavy-ion reactions — What have we learnt?

Contact Info

Product

Resources

About