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Article
Study the effect of aberrations on Point spread function and encircled energy of annular aperture
دراسة تأثير الزيوغ على دالة الانتشار النقطية و الطاقة التجميعية الدائرية لفتحة حلقية

Authors: Sundus Yaseen Hasan --- Widad Hamza Tarkhan
Journal: journal of kerbala university مجلة جامعة كربلاء ISSN: 18130410 Year: 2017 Volume: 15 Issue: 3 Pages: 108-115
Publisher: Kerbala University جامعة كربلاء

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Abstract

In this work, the encircled energy of point spread function (PSF(for annular aperture have been studied. This study is done for the case of diffraction limited system and for different kinds of first and third order aberrations were occurred, like tilt error, focus error, spherical aberration, and coma aberration. The study showed that the spherical aberration (third order aberration) can be balanced with focus error (first order aberration) to reduce the effect of these errors on encircled energy. The same thing occurs with coma aberration (third order aberration) which balanced with tilt error (first order aberration).

تم في هذا البحث دراسة الطاقة التجميعية الدائرية لدالة الانتشار النقطية (PSF) للفتحة الحلقية .حيث تم دراسة حالة النظام المحدد بالحيود, وكذلك أنواع مختلفة من زيوغ الرتبة الأولى والثالثة مثل الخطأ البؤري ,خطأ الإمالة ,الزيغ الكروي والزيغ المذنبي , وقد تبين ان تأثير الزيغ الكروي والخطأ البؤري يمكن ان يقل على الطاقة التجميعية الدائرية اذا تواجدا سويا حيث يوازن احدهما الآخر. ونفس الشئ يحدث مع الزيغ المذنبي الذي يتم موازنته مع خطأ الإمالة.


Article
POINT SPREAD FUNCTION FOR MULTI-RECTANGULAR APERTURE

Authors: Dr. SUNDUS YASEEN HASAN --- ARA'A MIBDIR HOLI
Journal: journal of al-qadisiyah for pure science(quarterly) مجلة القادسية للعلوم الصرفة (فصلية). ISSN: 19972490 Year: 2007 Volume: 12 Issue: 3 Pages: 243-256
Publisher: Al-Qadisiyah University جامعة القادسية

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Abstract

In this paper the point spread function (PSF) for multi-rectangular aperture with no aberration were found numerically with a Q-basic computer program and analytically by deriving suitable equations. And by comparing the two results they were shown a good coincidence which assure the trueness of the computer program.The values of PSF of the single rectangular aperture was compared with that of single square aperture previously found , and it is found that the PSF for a rectangular aperture has become wider by square root of aspect ratio value in one direction and narrower by the inverse of the square root of the aspect ratio value in the other direction.The PSF of multi-rectangular aperture were also computed when the focus error were found with a values of 0.25 and 0.5, and it found that the value 0f PSF of the peak have been decreasd by 73.6% of its original value with no aberration for the value of the focus errorw20=0.25 and by 28% of its original value for w20=0.5.

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Article
The Interacting Boson Model-1 Applied to the even-even 106 -116 Pd
تطبيق نموذج البوزونات المتفاعلة الأول على النوى زوجية زوجية لنظائر - 106 -116Pd

Authors: Sundus Yaseen Hasan سندس ياسين حسن --- Heiyam Najy Hady هيام ناجي هادي
Journal: Journal of Kufa - physics مجلة الكوفة للفيزياء ISSN: 20775830 Year: 2010 Volume: 2 Issue: 1 English Pages: 7-17
Publisher: University of Kufa جامعة الكوفة

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Abstract

The low lying levels structure and electric quadrupole transitions of 106-116Pd nuclei have been studied by using the Interacting Boson Model-1 (IBM-1). The Potential surfaces of these nuclei are also studied and the shapes of them are analyzed. The calculated results are in good agreement with recent experimental data. The results obtained and the values of parameters used in this calculations indicated that Pd isotopes have a vibrational properties with small amount of rotational and pair properties. tendency towered some more rotational properties appears as the number of neutrons approaches mid-shell between 50-82 shells

تمت دراسة تشوه مستويات الطاقة الواطئة والانتقالات رباعية القطب الكهربائية لنوى 106 -116 Pd باستخدام نموذجالبوزونات المتفاعلة الأول IBM-1 . ودرست ايضا سطوح تساوي الجهد لهذه النوى. أظهرت النتائج توافقا جيدامع القيم العملية الحديثة وأظهرت قيم المعاملات المستخدمة في هذه الحسابات ان هذه النظائر تمتلك صفاتاهتزازية مع نسبة قليلة من الصفات الدورانية. ويزداد الميل نحو الصفات الدورانية باقتراب عدد النيوترونات منمنتصف القشرة بين القشرتين 50-82

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