Indian National Gamma Array at Inter University Accelerator Centre, New Delhi

Muralithar, S.; Rani, K. J.; Singh, R. P.; Das, J. J.; Gehlot, J.; Golda, K. S.; Jhingan, A.; Madhavan, N.; Nath, S.; Sugathan, P.; Varughese, T.; Archunan, M.; Barua, P.; Gupta, A.; Jain, M.; Kothari, A.; Kumar, Bharat; Malyadri, A J; Naik, Umesh; Kumar, Raj; Kumar, Rajesh; Zacharias, Jerrold R.; Rao, S. Venugopal; Saini, Santosh Kumar; Suman, Saket; Kumar, Mohit; Subramaniam, Erica; Venkataramanan, S.; Dhal, A.; Jnaneswari, G.; Negi, D.; Raju, M. Kumar; Trivedi, T.; Bhowmik, R. K.

doi:10.1016/j.nima.2010.06.200

Cited by 114 publications

(39 citation statements)

References 18 publications

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“…1. The deexciting γ rays were detected using the Indian National Gamma Array (INGA) comprising 21 Compton suppressed clover detectors [25,26]. With the full assemblage of 24 clover detectors, the photopeak efficiency of INGA is ∼ 5% at the 1.3 MeV γ ray energy.…”

Section: Methodsmentioning

confidence: 99%

Band structures in Pd101

et al. 2017

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Excited states in the 101 Pd nucleus were investigated through the 75 As( 31 P, 2p3n) fusion-evaporation reaction at E lab = 125 MeV using the Indian National Gamma Array (INGA) spectrometer equipped with 21 clover Ge detectors. The level scheme is considerably extended for medium spin values. New positive-parity band structures in 101 Pd have been studied within the framework of the projected shell model (PSM) and are found to undergo transition from single quasiparticle to high-K three quasiparticle configuration after bandcrossing, i.e., from principal-axis rotation to tilted-axis rotation. The negative-parity band structures are discussed in the framework of the hybrid version of tilted-axis cranking (TAC) shell model calculations. The observed alignment gain in the lowest excited νh 11/2 negative-parity band results from successive (νg 7/2 ) 2 and (πg 9/2 ) 2 pair alignments. The higher excited negative-parity bands are reproduced for the ν[h 11/2 (g 7/2 /d 5/2 ) 2 ] and (πg 9/2 ) −2 ⊗ νh 11/2 configurations.

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Section: Methodsmentioning

confidence: 99%

Band structures in Pd101

et al. 2017

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“…[3]. The neutron-rich 18 γ-rays have been detected using the Indian National Gamma Array (INGA) [13], stationed at the 15 UD Pelletron Accelerator Centre at IUAC, New Delhi. The Clover detectors of the INGA setup were placed at θ = 32 • , 57 • , 90 • , 123 • , 148 • , with respect to the beam-axis.…”

Section: Methodsmentioning

confidence: 99%

Level lifetimes inP32obtained using the Doppler-shift attenuation method with thick molecular targets

Bhattacharjee

Basu

et al. 2014

Phys. Rev. C

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Level lifetimes in the 32 P nucleus have been determined using the Doppler Shift Attenuation Method (DSAM). Conventional DSAM measurements employ a thin target on a thick, high Z backing. An extension of the technique to thick molecular targets is presented. The necessary modifications in the standard analysis procedures, pertaining to the incorporation of stopping power estimations for molecular media and evolution of residue cross-section in thick target, have been implemented. Further, x-ray powder diffraction (XRD) and scanning electron-microscopy (SEM) have also been carried out to probe the structural composition of the target. The lifetime results have been validated with respect to the previous measurements and upper limit on lifetimes of seven levels have been determined for the first time. Large basis shell model calculations have been carried out and compared with the experimental measurements.

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“…The recoils were leaving the target with a mean velocity v of about 0.9 % of the velocity of light, c. The target and backing were chosen to ensure lifetime determination in the sub-picosecond region using the Doppler-Shift Attenuation Method (DSAM). The de-exciting gamma-rays were registered by the Indian National Gamma Array (INGA), whose 15 Clover detectors are accommodated in a 4π geometry [32]. For the purposes of the DSAM analysis the detectors of INGA were grouped into rings with approximately the same position with respect to the beam axis.…”

Section: Introductionmentioning

confidence: 99%

Lifetime measurements in mass regions A=100 and A=130 as a test for chirality in nuclear systems

Tonev

Yavahchova

Angelis

et al. 2016

EPJ Web of Conferences

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Abstract. Two odd-odd nuclei from the A ∼ 100 and A ∼ 130 regions, namely 102 Rh and 134 Pr have been studied in search for chiral doublet bands via 94 Zr( 11 B,3n) 102 Rh and 119 Sn( 19 F,4n) 134 Pr reactions, respectively. Two nearly degenerate bands built on the πg 9/2 ⊗ νh 11/2 configuration have been identified in 102 Rh and on the πg 11/2 ⊗ νh 11/2 configuration for 134 Pr. Lifetimes of excited nuclear states were measured using Dopplershift attenuation method and recoil distance Doppler-shift method. The deexciting gamma rays were registered by the Indian National Gamma Array for 102 Rh and using the EUROBALL IV detector array with an inner Bismuth Germanate (BGO) ball for 134 Pr, respectively. Polarization and angular correlation measurements have been performed to establish the spin and parity assignments for these bands. The derived reduced transition probabilities are compared to the predicitons of the two quasiparticles + triaxial rotor and interacting boson fermion-fermion models.

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Indian National Gamma Array at Inter University Accelerator Centre, New Delhi

Cited by 114 publications

References 18 publications

Band structures in Pd101

Band structures in Pd101

Level lifetimes inP32obtained using the Doppler-shift attenuation method with thick molecular targets

Lifetime measurements in mass regions A=100 and A=130 as a test for chirality in nuclear systems

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