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added proper range

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This commit is contained in:
Markus Rosenstihl 2025-03-25 21:05:24 +01:00
parent 8968691622
commit 0ae4c6920c
1 changed files with 16 additions and 9 deletions
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25
isotables/isotopapp/views.py
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@ -70,32 +70,39 @@ def result(request):
radius = 2.5
center = (0, 0)
w = Wedge(center, radius, theta1, theta2, fc='#D5D9FFB2', edgecolor='black')
w_upper = Wedge((0,2.5), radius, theta1, theta2, fc='#D5D9FF42', edgecolor='black')
w_lower = Wedge((0,-2.5), radius, theta1, theta2, fc='#D5D9FF42', edgecolor='black')
ax.set_xlim([-8, 8])
ax.set_ylim([-8, 8])
ax.grid(True)
ax.add_patch(w_upper)
ax.add_patch(w_lower)
ax.add_patch(w)
sample_diameter = 5e-3
gradient = float(request.GET.get('gradient'))
freq_range = sample_diameter/2 * gradient * isotope1.gamma
close_isotopes = []
for isotope in Isotope.objects.all():
if isotope.gamma == 0: continue
if not isotope.stable: continue
f_Larmor = field_T*isotope.gamma
z = (freq/isotope.gamma-field_T)/gradient
if abs(z) <= sample_diameter/2:
if abs(z) <= sample_diameter:
i_info = isotope_info(isotope, field_T)
#i_info[3] = f"{z*1e3:.1f} mm"
close_isotopes.append(i_info)
arr = FancyArrowPatch((np.sqrt(2.5**2-(z*1e3)**2),z*1e3), (-np.sqrt(2.5**2-(z*1e3)**2), z*1e3),
arrowstyle='<->,head_width=.1', mutation_scale=20)
arr = FancyArrowPatch((-2.5,z*1e3), (2.5, z*1e3),
arrowstyle='<->,head_width=.1', mutation_scale=20, linewidth=2)
ax.add_patch(arr)
ax.annotate(f"{isotope.n_nucleons}{isotope.symbol}", (1.05, 0), xycoords=arr, ha='left', va='center',fontsize=7)
ax.annotate(f"{isotope.n_nucleons}{isotope.symbol}", (1.1, 0), xycoords=arr, ha='left', va='center',fontsize=8)
ax.set_aspect('equal')
ax.set_xlim([-4, 4])
ax.set_ylim([-4, 4])
ax.set_ylabel('z (mm)')
ax.grid(True)
buf = BytesIO()
plt.savefig(buf, format='png')
figure = base64.b64encode(buf.getvalue()).decode('utf-8').replace('\n', '')