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arXiv 1108.0280nucl-ex
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相对论能量下弹丸破片的发射特性

Emission Characteristics of the Projectile Fragments at Relativistic Energy

M. K. Singh, A. K. Soma, Ramji Pathak, V. Singh

摘要:

使用具有约1A GeV的动能的射弹(84 ^Kr_36)来暴露NIKFI BR-2乳剂靶。在本研究中,共使用了700个非弹性事件的弹丸碎片。在不同发射角的情况下,同时发射的其它破片的电荷对破片的发射角有很大的影响。角分布的研究表明,对称的性质,较轻的收费弹丸碎片。对称性随着抛射体碎片的荷电而降低。在发射角~ 4 °时,对不同靶种的乳胶,观察到了相似的动量转移过程。我们还观察到一个小的,但显着的振幅峰两侧的大峰值几乎所有的轻电荷弹丸碎片具有不同的δ角值。它反映了有几个百分比的弹丸碎片来自于重型弹丸碎片的衰变或任何其他过程。

英文摘要:

A projectile (84^Kr_36) having kinetic energy around 1 A GeV was used to expose NIKFI BR-2 emulsion target. A total of 700 inelastic events are used in the present studies on projectile fragments. The emission angle of the projectile fragments are strongly affected by charge of the other projectile fragments emitted at same time with different emission angle is observed. The angular distribution studies show symmetrical nature for lighter charge projectile fragments. The symmetrical nature decreased with the charge of projectile fragments. At ~4o of emission angle for double charge projectile fragments, the momentum transfer during interaction is similar for various target species of emulsion were observed. We also observed a small but significant amplitude peaks on both side of the big peak for almost all light charge projectile fragments having different delta angle values. It reflects that there are few percent of projectile fragments that are coming from the decay of heavy projectile fragments or any other process.

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