Systematic study of pre-equilibrium emission at low energies in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">C</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>12</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>- and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mmultiscripts><mml:mi mathvariant="normal">O</mml:mi><mml:mprescripts /><mml:none /><mml:mrow><mml:mn>16</mml:mn></mml:mrow></mml:mmultiscripts></mml:math>-induced

Sharma, Manoj K.; Singh, P.P.; Singh, Devendra P.; Yadav, Abhishek; Sharma, Vijay R.; Bala, Indu; Kumar, R.; Unnati,; Singh, B. P.; Prasad, R.

doi:10.1103/physrevc.91.014603

Cited by 27 publications

(8 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…High Purity Germanium Detector (HPGe). The reaction cross sections for the product residues have been obtained from the measured intensities of the characteristic γ-rays using the standard formulation [1].…”

Section: Measurement and Analysis Of Excitation Functionsmentioning

confidence: 99%

“…The pre-compound (PCN) emission process in heavy ion reactions at relatively low energies ranging from 4 to 7 MeV/nucleon has been a topic of recent interest [1], since it is, generally, expected to occur at relatively high energies ⇡10-15 MeV/nucleon [2]. The PCN process may be understood as the fusion of two heavy nuclei in such a way so that a composite nucleus forms far from the statistical equilibrium, and a large fraction of its energy is considered to be in the form of an orderly translational motion of the nucleons of the projectile and target nucleus [3][4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Pre-compound emission in low-energy heavy-ion interactions

Sharma¹,

Shuaib

Sharma

et al. 2017

EPJ Web Conf.

Self Cite

View full text Add to dashboard Cite

Abstract. Recent experimental studies have shown the presence of pre-compound emission component in heavy ion reactions at low projectile energy ranging from 4 to 7 MeV/nucleons. In earlier measurements strength of the pre-compound component has been estimated from the di↵erence in forward-backward distributions of emitted particles. Present measurement is a part of an ongoing program on the study of reaction dynamics of heavy ion interactions at low energies aimed at investigating the e↵ect of momentum transfer in compound, precompound, complete and incomplete fusion processes in heavy ion reactions. In the present work on the basis of momentum transfer the measurement of the recoil range distributions of heavy residues has been used to decipher the components of compound and pre-compound emission processes in the fusion of 16 O projectile with 159 Tb and 169 Tm targets. The analysis of recoil range distribution measurements show two distinct linear momentum transfer components corresponding to pre-compound and compound nucleus processes are involved. In order to obtain the mean input angular momentum associated with compound and pre-compound emission processes, an online measurement of the spin distributions of the residues has been performed. The analysis of spin distribution indicate that the mean input angular momentum associated with pre-compound products is found to be relatively lower than that associated with compound nucleus process. The pre-compound components obtained from the present analysis are consistent with those obtained from the analysis of excitation functions.

show abstract

Section: Measurement and Analysis Of Excitation Functionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Pre-compound emission in low-energy heavy-ion interactions

Sharma¹,

Shuaib

Sharma

et al. 2017

EPJ Web Conf.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Substantial signature of PEQ process has been witnessed in high energy tail of excitation functions of light and heavy-ion induced reactions. However, besides compound and precompound processes, ICF also starts to compete in heavy-ion induced reaction at relatively high energy (10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20)(21)(22)(23)(24)(25) MeV/nucleon) [10][11][12][13][14]. Birattari et al [10], Cavinato et al [11],…”

Section: Introductionmentioning

confidence: 99%

“…Vergani et al [12] experimented on the 12 C and/or 16 O induced reactions on different targets and observed PEQ emission of nucleons during the thermalization of compound system. Moreover, PEQ process was also observed at relatively low energy ∼ 4-8 MeV/nucleon where pure evaporation process is dominant.…”

Section: Introductionmentioning

confidence: 99%

“…PEQ emission of α-particles was reported by Amorini et al [15] in complete and incomplete fusion reaction in the 12 C + 64 Ni reaction at 8 MeV/nucleon. Sharma et al [16] analyzed the PEQ emission of neutrons from 12 C and 16 O induced reaction on 128 Te, 169 Tm, 159 Tb and 181 Ta targets at 4-7 MeV/nucleon. Therefore more experimental investigation near the barrier is necessary to draw specific conclusion and to develop sophisticated theory for PEQ and CF-ICF processes in weakly bound nuclear reactions.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental probe for the production ofRu97from theLi7+Nb93
Kumar
¹
,
Maiti
²
,
Lahiri
³

2016
Phys. Rev. C
35
0
22
0
View full text Add to dashboard Cite

Background: Interaction of weakly bound heavy-ions with an intermediate or heavy target is not yet understood completely due to the scarcity of experimental data. In order to develop a clear understanding of breakup fusion or preequilibrium emission even at low energy range, 3-10 MeV/nucleon, more experimental investigations are necessary.Purpose: Study of reaction mechanisms involved in the weakly bound heavy-ion induced reaction, 7 Li + 93 Nb, at low energies by measuring the production cross sections of the residual radionuclides. Method: Natural niobium ( 93 Nb) foil, backed by aluminium (Al) catcher, arranged in a stack was bombarded by 7 Li ions of 20-45 MeV energy. Activity of the residues produced in each 93 Nb target was measured by off-line γ-ray spectrometry after the end of bombardment (EOB) and cross sections were calculated. Experimental cross sections were compared with those computed using compound and precompound models. Results: In general, measured excitation functions of all residues produced in 7 Li + 93 Nb reaction showed good agreement with the model calculations based on Hauser-Feshbach formalism and exciton model for compound and precompound processes, respectively. Significant preequilibrium emission of neutrons was observed at the relatively high energy tail of the excitation function of 97 Ru.Conclusions: Preequilibrium process played an important role for the enhancement of crosssection in xn reaction channel over the compound reaction mechanism at higher energies for 7 Li + 93 Nb reaction. Additionally, indirect evidence of incomplete or breakup fusion was also perceived.

show abstract

Effect of projectile structure on break-up fusion for 14N + 175Lu system at intermediate energies

et al. 2022

View full text Add to dashboard Cite

Systematic study of pre-equilibrium emission at low energies inC12- andO16-induced

Cited by 27 publications

References 28 publications

Pre-compound emission in low-energy heavy-ion interactions

Pre-compound emission in low-energy heavy-ion interactions

Experimental probe for the production ofRu97from theLi7+Nb93
Kumar
¹
,
Maiti
²
,
Lahiri
³

2016
Phys. Rev. C
35
0
22
0
View full text Add to dashboard Cite

Effect of projectile structure on break-up fusion for 14N + 175Lu system at intermediate energies

Contact Info

Product

Resources

About

Systematic study of pre-equilibrium emission at low energies inC12- andO16-induced

Cited by 27 publications

References 28 publications

Pre-compound emission in low-energy heavy-ion interactions

Pre-compound emission in low-energy heavy-ion interactions

Experimental probe for the production ofRu97from theLi7+Nb93Kumar1, Maiti2, Lahiri3 2016Phys. Rev. C350220View full textAdd to dashboardCite

Effect of projectile structure on break-up fusion for 14N + 175Lu system at intermediate energies

Contact Info

Product

Resources

About

Experimental probe for the production ofRu97from theLi7+Nb93
Kumar
¹
,
Maiti
²
,
Lahiri
³

2016
Phys. Rev. C
35
0
22
0
View full text Add to dashboard Cite