نکلنا خلد سے آدم کا۔۔۔
آس کی خوشبو یاس کی بد بو پرہمیشہ غالب آتی ہے
یوں محسوس ہو رہا تھا
جیسے دل میں اِ ک آگ سی لگی ہو
اور سب کچھ اس بھٹی میں جھونک رہا ہوں
اس بھٹی کو صرف آنسو ہی ٹھنڈا کر سکتے تھے
لیکن !وہ بھی لب ِ مژگاں تک آتے آتے مر گئے
کتنی مشکل سے محبت کے تارو پود سے سنہری خواب بنے تھے
مگرایک تار کے نکل جانے سے
سب خواب نیند کی وادیوں میں کہیں کھو گئے ہیں
حیف!میرے دھندلے خواب
جو میں کسی کی آنکھوں سے دیکھ رہا تھا
یوں لگتا ہے جیسے
میرا بھی شمار اُن سوختہ سروںمیں ہوتا ہے
جو بحرِ محبت میں بنا کشتی اور پتوار کے اتر گئے تھے
مجھے اپنی عادتوں پردکھ ہے
جو پھر سے خراب ہو جائیں گی
جنہیں اک عرصہ بدلنے میں لگا تھا
یہ آدم اور آدم زاد کے نصیب میں لکھا جا چکا ہے
کہ اس کا کبھی ایک ٹھکانہ ہو ہی نہیں سکتا
کبھی یہ بہشت سے نکالا جاتا ہے
کبھی اپنے گھر سے دربدر ہوتا ہے تو کبھی شہر سے
کبھی کسی کی زندگی سے توکبھی کسی کے دل سے
یزداں نے بھی انسان کے ساتھ کیاخوب کھیل کھیلا ہے
اسے فاصلوں میںالجھائے رکھتا ہے
Literature, among almost all nations, has always been a source of cultural unity & identity. It’s a deep rooted tree quenching the intellectual and cultural thirstiness. Arabic Language, of course deserves to be called a nourishing language-bringing up- for centuries- the nations came up under Islamic caliphate. Almost all world literature is a molded shape of Arabic key sources. Moreover, Arabic language bestowed to look into latent works of Roman. Thus Arabs are the pioneers of presenting quality works-believing in the utilitarian aspect to the world. This language has benignity to collect the then world literature for the purpose of universal awareness. So much more literary works were translated into Arabic with a view to ponder, to discourse and finally to infer. I have presented in this article a glimpse of how the word literature in its pure Arabic context denoted certain contextual definitions since the origin (pre-Islamic period) till the late 4th century A.H.
We have investigated the dynamics of staged pinch plasma using different types of stability criterion with a view to suppress Rayleigh-Taylor (R-T) instability. Fusion parameters in a staged pinch plasma device are estimated by considering double-gas puff as well as multicascade liner (N-multiple shells of finite thickness) system. First of all, the implosion dynamics of dense D-T fiber plasma driven by a double gas-puff z-pinch is examined in the presence of kinetic pressure. A modified snow-plow model has been used to describe the outer dynamics of imploding z-pinch plasma. We found that the inclusion of kinetic pressure introduces the usual plasma β-term. Our numerical results demonstrate that the fusion parameters can be achieved in a dense θ-pinch D-T fiber plasma for an optimum choice of density ratios of the test to driver gas at the interface position and the kinetic to magnetic pressure ratio. We expect that double gas- puff staged pinch device would be a more feasible approach to achieve fusion conditions with an enhanced stability. Since the shell thickness of the imploding plasma liner plays an important role in the stabilization of short-wavelength perturbations, causing R-T instability. First, we consider the implosion dynamics of a double-cascade configuration of two nested cylindrical shells with some initial radii and puff thicknesses that are imploded towards the axis under the action of J×B force. In order to achieve high density plasma at the final stage of collapse, D-T fiber plasma was seeded with high-Z Kr impurity so as to initiate radiative collapse. We choose different puff thickness so as to achieve stable implosion satisfying the criterion proposed by De Groot et al., [17]. Then we have also generalized the work by considering that the imploding z-pinch plasma is made up of discrete N-multiple shells of various thicknesses, radii and mass densities so as to reduce the total growth rate of R-T instability at the final stage of implosion. Our numerical results show that the plasma parameters of the D-T fiber sensitively depends upon the shell mass ratios and thicknesses. Large values of puff-thickness and mass-ratios provide stabilization against the R-T instability in the final stage of compression but adversely affects fusion conditions. For optimum values of puff-thicknesses and mass ratios, one can obtain fusion parameters of interest in a multicascade liner staged pinch device. In our zero- dimensional code, we have used typical parameters of Sandia National Laboratories for which the amplitude of discharge current was 10 MA, with a pulse duration of 50 nsec. We have also used sinusoidal type current profile. To make our model calculations more realistic, we have used current stepping technique, which uses the circuit coupled equation. In this technique, a single current step is added to the primary pinching current. We found that with current- stepping method, one can obtain very high density and high temperature plasma with relatively small values of driving current (kA) which are delivered in μsec time scale. Thus for optimum choice of scaling parameters, staged pinch device with current-stepping technique seemed to be a more feasible approach to achieve fusion conditions.